diff --git a/src/core/interfaces/configuration_interface.h b/src/core/interfaces/configuration_interface.h
index e112c7210..0a4cf8d5f 100644
--- a/src/core/interfaces/configuration_interface.h
+++ b/src/core/interfaces/configuration_interface.h
@@ -42,16 +42,16 @@ class ConfigurationInterface
 {
 public:
     virtual ~ConfigurationInterface() = default;
-    virtual std::string property(std::string property_name, std::string default_value) = 0;
-    virtual bool property(std::string property_name, bool default_value) = 0;
-    virtual int64_t property(std::string property_name, int64_t default_value) = 0;
-    virtual uint64_t property(std::string property_name, uint64_t default_value) = 0;
-    virtual int32_t property(std::string property_name, int32_t default_value) = 0;
-    virtual uint32_t property(std::string property_name, uint32_t default_value) = 0;
-    virtual int16_t property(std::string property_name, int16_t default_value) = 0;
-    virtual uint16_t property(std::string property_name, uint16_t default_value) = 0;
-    virtual float property(std::string property_name, float default_value) = 0;
-    virtual double property(std::string property_name, double default_value) = 0;
+    virtual std::string property(std::string property_name, std::string default_value) const = 0;
+    virtual bool property(std::string property_name, bool default_value) const = 0;
+    virtual int64_t property(std::string property_name, int64_t default_value) const = 0;
+    virtual uint64_t property(std::string property_name, uint64_t default_value) const = 0;
+    virtual int32_t property(std::string property_name, int32_t default_value) const = 0;
+    virtual uint32_t property(std::string property_name, uint32_t default_value) const = 0;
+    virtual int16_t property(std::string property_name, int16_t default_value) const = 0;
+    virtual uint16_t property(std::string property_name, uint16_t default_value) const = 0;
+    virtual float property(std::string property_name, float default_value) const = 0;
+    virtual double property(std::string property_name, double default_value) const = 0;
     virtual void set_property(std::string property_name, std::string value) = 0;
 };
 
diff --git a/src/core/receiver/file_configuration.cc b/src/core/receiver/file_configuration.cc
index 66a488449..7e46943b5 100644
--- a/src/core/receiver/file_configuration.cc
+++ b/src/core/receiver/file_configuration.cc
@@ -63,7 +63,7 @@ void FileConfiguration::init()
 }
 
 
-std::string FileConfiguration::property(std::string property_name, std::string default_value)
+std::string FileConfiguration::property(std::string property_name, std::string default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -73,7 +73,7 @@ std::string FileConfiguration::property(std::string property_name, std::string d
 }
 
 
-bool FileConfiguration::property(std::string property_name, bool default_value)
+bool FileConfiguration::property(std::string property_name, bool default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -84,7 +84,7 @@ bool FileConfiguration::property(std::string property_name, bool default_value)
 }
 
 
-int64_t FileConfiguration::property(std::string property_name, int64_t default_value)
+int64_t FileConfiguration::property(std::string property_name, int64_t default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -95,7 +95,7 @@ int64_t FileConfiguration::property(std::string property_name, int64_t default_v
 }
 
 
-uint64_t FileConfiguration::property(std::string property_name, uint64_t default_value)
+uint64_t FileConfiguration::property(std::string property_name, uint64_t default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -106,7 +106,7 @@ uint64_t FileConfiguration::property(std::string property_name, uint64_t default
 }
 
 
-int FileConfiguration::property(std::string property_name, int default_value)
+int FileConfiguration::property(std::string property_name, int default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -117,7 +117,7 @@ int FileConfiguration::property(std::string property_name, int default_value)
 }
 
 
-unsigned int FileConfiguration::property(std::string property_name, unsigned int default_value)
+unsigned int FileConfiguration::property(std::string property_name, unsigned int default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -128,7 +128,7 @@ unsigned int FileConfiguration::property(std::string property_name, unsigned int
 }
 
 
-uint16_t FileConfiguration::property(std::string property_name, uint16_t default_value)
+uint16_t FileConfiguration::property(std::string property_name, uint16_t default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -139,7 +139,7 @@ uint16_t FileConfiguration::property(std::string property_name, uint16_t default
 }
 
 
-int16_t FileConfiguration::property(std::string property_name, int16_t default_value)
+int16_t FileConfiguration::property(std::string property_name, int16_t default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -150,7 +150,7 @@ int16_t FileConfiguration::property(std::string property_name, int16_t default_v
 }
 
 
-float FileConfiguration::property(std::string property_name, float default_value)
+float FileConfiguration::property(std::string property_name, float default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -161,7 +161,7 @@ float FileConfiguration::property(std::string property_name, float default_value
 }
 
 
-double FileConfiguration::property(std::string property_name, double default_value)
+double FileConfiguration::property(std::string property_name, double default_value) const
 {
     if (overrided_->is_present(property_name))
         {
@@ -176,3 +176,9 @@ void FileConfiguration::set_property(std::string property_name, std::string valu
 {
     overrided_->set_property(property_name, value);
 }
+
+
+bool FileConfiguration::is_present(const std::string& property_name) const
+{
+    return (overrided_->is_present(property_name));
+}
diff --git a/src/core/receiver/file_configuration.h b/src/core/receiver/file_configuration.h
index 25c3116bf..2b22e61fb 100644
--- a/src/core/receiver/file_configuration.h
+++ b/src/core/receiver/file_configuration.h
@@ -48,17 +48,18 @@ public:
     explicit FileConfiguration(std::string filename);
     FileConfiguration();
     ~FileConfiguration() = default;
-    std::string property(std::string property_name, std::string default_value);
-    bool property(std::string property_name, bool default_value);
-    int64_t property(std::string property_name, int64_t default_value);
-    uint64_t property(std::string property_name, uint64_t default_value);
-    int32_t property(std::string property_name, int32_t default_value);
-    uint32_t property(std::string property_name, uint32_t default_value);
-    int16_t property(std::string property_name, int16_t default_value);
-    uint16_t property(std::string property_name, uint16_t default_value);
-    float property(std::string property_name, float default_value);
-    double property(std::string property_name, double default_value);
-    void set_property(std::string property_name, std::string value);
+    std::string property(std::string property_name, std::string default_value) const override;
+    bool property(std::string property_name, bool default_value) const override;
+    int64_t property(std::string property_name, int64_t default_value) const override;
+    uint64_t property(std::string property_name, uint64_t default_value) const override;
+    int32_t property(std::string property_name, int32_t default_value) const override;
+    uint32_t property(std::string property_name, uint32_t default_value) const override;
+    int16_t property(std::string property_name, int16_t default_value) const override;
+    uint16_t property(std::string property_name, uint16_t default_value) const override;
+    float property(std::string property_name, float default_value) const override;
+    double property(std::string property_name, double default_value) const override;
+    void set_property(std::string property_name, std::string value) override;
+    bool is_present(const std::string& property_name) const;
 
 private:
     void init();
diff --git a/src/core/receiver/in_memory_configuration.cc b/src/core/receiver/in_memory_configuration.cc
index bc84bde87..2978ed0ae 100644
--- a/src/core/receiver/in_memory_configuration.cc
+++ b/src/core/receiver/in_memory_configuration.cc
@@ -36,7 +36,7 @@ InMemoryConfiguration::~InMemoryConfiguration()
 }
 
 
-std::string InMemoryConfiguration::property(std::string property_name, std::string default_value)
+std::string InMemoryConfiguration::property(std::string property_name, std::string default_value) const
 {
     auto iter = properties_.find(property_name);
     if (iter != properties_.end())
@@ -47,63 +47,63 @@ std::string InMemoryConfiguration::property(std::string property_name, std::stri
 }
 
 
-bool InMemoryConfiguration::property(std::string property_name, bool default_value)
+bool InMemoryConfiguration::property(std::string property_name, bool default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-int64_t InMemoryConfiguration::property(std::string property_name, int64_t default_value)
+int64_t InMemoryConfiguration::property(std::string property_name, int64_t default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-uint64_t InMemoryConfiguration::property(std::string property_name, uint64_t default_value)
+uint64_t InMemoryConfiguration::property(std::string property_name, uint64_t default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-int32_t InMemoryConfiguration::property(std::string property_name, int32_t default_value)
+int32_t InMemoryConfiguration::property(std::string property_name, int32_t default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-uint32_t InMemoryConfiguration::property(std::string property_name, uint32_t default_value)
+uint32_t InMemoryConfiguration::property(std::string property_name, uint32_t default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-uint16_t InMemoryConfiguration::property(std::string property_name, uint16_t default_value)
+uint16_t InMemoryConfiguration::property(std::string property_name, uint16_t default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-int16_t InMemoryConfiguration::property(std::string property_name, int16_t default_value)
+int16_t InMemoryConfiguration::property(std::string property_name, int16_t default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-float InMemoryConfiguration::property(std::string property_name, float default_value)
+float InMemoryConfiguration::property(std::string property_name, float default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
 }
 
 
-double InMemoryConfiguration::property(std::string property_name, double default_value)
+double InMemoryConfiguration::property(std::string property_name, double default_value) const
 {
     std::string empty;
     return converter_->convert(property(property_name, empty), default_value);
@@ -123,7 +123,7 @@ void InMemoryConfiguration::supersede_property(const std::string& property_name,
 }
 
 
-bool InMemoryConfiguration::is_present(const std::string& property_name)
+bool InMemoryConfiguration::is_present(const std::string& property_name) const
 {
     return (properties_.find(property_name) != properties_.end());
 }
diff --git a/src/core/receiver/in_memory_configuration.h b/src/core/receiver/in_memory_configuration.h
index 59f69e133..2f834cdf0 100644
--- a/src/core/receiver/in_memory_configuration.h
+++ b/src/core/receiver/in_memory_configuration.h
@@ -43,19 +43,19 @@ class InMemoryConfiguration : public ConfigurationInterface
 public:
     InMemoryConfiguration();
     ~InMemoryConfiguration();
-    std::string property(std::string property_name, std::string default_value);
-    bool property(std::string property_name, bool default_value);
-    int64_t property(std::string property_name, int64_t default_value);
-    uint64_t property(std::string property_name, uint64_t default_value);
-    int32_t property(std::string property_name, int32_t default_value);
-    uint32_t property(std::string property_name, uint32_t default_value);
-    int16_t property(std::string property_name, int16_t default_value);
-    uint16_t property(std::string property_name, uint16_t default_value);
-    float property(std::string property_name, float default_value);
-    double property(std::string property_name, double default_value);
-    void set_property(std::string property_name, std::string value);
+    std::string property(std::string property_name, std::string default_value) const override;
+    bool property(std::string property_name, bool default_value) const override;
+    int64_t property(std::string property_name, int64_t default_value) const override;
+    uint64_t property(std::string property_name, uint64_t default_value) const override;
+    int32_t property(std::string property_name, int32_t default_value) const override;
+    uint32_t property(std::string property_name, uint32_t default_value) const override;
+    int16_t property(std::string property_name, int16_t default_value) const override;
+    uint16_t property(std::string property_name, uint16_t default_value) const override;
+    float property(std::string property_name, float default_value) const override;
+    double property(std::string property_name, double default_value) const override;
+    void set_property(std::string property_name, std::string value) override;
     void supersede_property(const std::string& property_name, const std::string& value);
-    bool is_present(const std::string& property_name);
+    bool is_present(const std::string& property_name) const;
 
 private:
     std::map<std::string, std::string> properties_;