diff --git a/src/algorithms/signal_source/adapters/ion_gsms_signal_source.cc b/src/algorithms/signal_source/adapters/ion_gsms_signal_source.cc
index c0db26e71..5dde9915c 100644
--- a/src/algorithms/signal_source/adapters/ion_gsms_signal_source.cc
+++ b/src/algorithms/signal_source/adapters/ion_gsms_signal_source.cc
@@ -56,9 +56,8 @@ IONGSMSSignalSource::IONGSMSSignalSource(const ConfigurationInterface* configura
     unsigned int out_streams,
     Concurrent_Queue<pmt::pmt_t>* queue __attribute__((unused)))
     : SignalSourceBase(configuration, role, "ION_GSMS_Signal_Source"s),
-      metadata_file_(configuration->property(role + ".metadata_filename"s, "../data/example_capture_metadata.sdrx"s)),
       stream_ids_(parse_comma_list(configuration->property(role + ".streams"s, ""s))),
-      metadata_(metadata_file_),
+      metadata_(configuration->property(role + ".metadata_filename"s, "../data/example_capture_metadata.sdrx"s)),
       timestamp_clock_offset_ms_(configuration->property(role + ".timestamp_clock_offset_ms"s, 0.0)),
       in_streams_(in_streams),
       out_streams_(out_streams)
@@ -72,7 +71,7 @@ IONGSMSSignalSource::IONGSMSSignalSource(const ConfigurationInterface* configura
             LOG(ERROR) << "A signal source does not have an output stream";
         }
 
-    sources_ = metadata_.make_stream_sources(configuration, role, stream_ids_);
+    sources_ = metadata_.make_stream_sources(stream_ids_);
 
     for (const auto& source : sources_)
         {
diff --git a/src/algorithms/signal_source/adapters/ion_gsms_signal_source.h b/src/algorithms/signal_source/adapters/ion_gsms_signal_source.h
index d724d101b..6e0aa6364 100644
--- a/src/algorithms/signal_source/adapters/ion_gsms_signal_source.h
+++ b/src/algorithms/signal_source/adapters/ion_gsms_signal_source.h
@@ -58,7 +58,6 @@ protected:
     }
 
 private:
-    std::string metadata_file_;
     std::vector<std::string> stream_ids_;
     std::vector<IONGSMSFileSource::sptr> sources_;
     std::vector<gnss_shared_ptr<gr::block>> copy_blocks_;
diff --git a/src/algorithms/signal_source/libs/ion_gsms.cc b/src/algorithms/signal_source/libs/ion_gsms.cc
index e44c0abab..78f9060bd 100644
--- a/src/algorithms/signal_source/libs/ion_gsms.cc
+++ b/src/algorithms/signal_source/libs/ion_gsms.cc
@@ -22,8 +22,6 @@
 using namespace std::string_literals;
 
 IONGSMSFileSource::IONGSMSFileSource(
-    const ConfigurationInterface* configuration __attribute__((unused)),
-    const std::string& role __attribute__((unused)),
     const fs::path& metadata_filepath,
     const GnssMetadata::File& file,
     const GnssMetadata::Block& block,
diff --git a/src/algorithms/signal_source/libs/ion_gsms.h b/src/algorithms/signal_source/libs/ion_gsms.h
index 054b1e9dd..64a3e8c16 100644
--- a/src/algorithms/signal_source/libs/ion_gsms.h
+++ b/src/algorithms/signal_source/libs/ion_gsms.h
@@ -17,7 +17,6 @@
 #ifndef GNSS_SDR_ION_GNSS_SDR_METADATA_STANDARD_H
 #define GNSS_SDR_ION_GNSS_SDR_METADATA_STANDARD_H
 
-#include "configuration_interface.h"
 #include "gnss_block_interface.h"
 #include "gnss_sdr_filesystem.h"
 #include "ion_gsms_chunk_data.h"
@@ -40,8 +39,6 @@ public:
     using sptr = gnss_shared_ptr<IONGSMSFileSource>;
 
     IONGSMSFileSource(
-        const ConfigurationInterface* configuration,
-        const std::string& role,
         const fs::path& metadata_filepath,
         const GnssMetadata::File& file,
         const GnssMetadata::Block& block,
diff --git a/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.cc b/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.cc
index eea6e9c5f..7d4c96fa5 100644
--- a/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.cc
+++ b/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.cc
@@ -62,7 +62,7 @@ void IONGSMSMetadataHandler::load_metadata()
         }
 }
 
-std::vector<IONGSMSFileSource::sptr> IONGSMSMetadataHandler::make_stream_sources(const ConfigurationInterface* configuration, const std::string& role, const std::vector<std::string>& stream_ids) const
+std::vector<IONGSMSFileSource::sptr> IONGSMSMetadataHandler::make_stream_sources(const std::vector<std::string>& stream_ids) const
 {
     std::vector<IONGSMSFileSource::sptr> sources{};
     for (const auto& file : metadata_.Files())
@@ -92,8 +92,6 @@ std::vector<IONGSMSFileSource::sptr> IONGSMSMetadataHandler::make_stream_sources
                                                             if (found)
                                                                 {
                                                                     auto source = gnss_make_shared<IONGSMSFileSource>(
-                                                                        configuration,
-                                                                        role,
                                                                         metadata_filepath_,
                                                                         file,
                                                                         block,
diff --git a/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.h b/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.h
index 2431fbec8..969a3f4be 100644
--- a/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.h
+++ b/src/algorithms/signal_source/libs/ion_gsms_metadata_handler.h
@@ -34,7 +34,7 @@ class IONGSMSMetadataHandler
 public:
     explicit IONGSMSMetadataHandler(const std::string& metadata_filepath);
 
-    std::vector<IONGSMSFileSource::sptr> make_stream_sources(const ConfigurationInterface* configuration, const std::string& role, const std::vector<std::string>& stream_ids) const;
+    std::vector<IONGSMSFileSource::sptr> make_stream_sources(const std::vector<std::string>& stream_ids) const;
     const std::string& metadata_filepath() const;
 
 private: