diff --git a/src/algorithms/libs/pass_through.cc b/src/algorithms/libs/pass_through.cc
index b5b7d2039..dbc96f32e 100644
--- a/src/algorithms/libs/pass_through.cc
+++ b/src/algorithms/libs/pass_through.cc
@@ -32,16 +32,7 @@ Pass_Through::Pass_Through(const ConfigurationInterface* configuration, const st
                                 out_streams_(out_streams)
 {
     const std::string default_item_type("gr_complex");
-    const std::string input_type = configuration->property(role + ".input_item_type", default_item_type);
-    const std::string output_type = configuration->property(role + ".output_item_type", default_item_type);
-    if (input_type != output_type)
-        {
-            LOG(WARNING) << "input_item_type and output_item_type are different in a Pass_Through implementation! Taking "
-                         << input_type
-                         << ", but item_size will supersede it.";
-        }
-
-    item_type_ = configuration->property(role + ".item_type", input_type);
+    item_type_ = configuration->property(role + ".item_type", default_item_type);
     inverted_spectrum = configuration->property(role + ".inverted_spectrum", false);
 
     if (item_type_ == "float")
@@ -96,13 +87,11 @@ Pass_Through::Pass_Through(const ConfigurationInterface* configuration, const st
     DLOG(INFO) << "kludge_copy(" << kludge_copy_->unique_id() << ")";
     if (in_streams_ > 1)
         {
-            LOG(ERROR) << "This implementation only supports one input stream";
-            LOG(ERROR) << in_streams_;
+            LOG(ERROR) << "This implementation only supports one input stream but it is set to " << in_streams_;
         }
     if (out_streams_ > 1)
         {
-            LOG(ERROR) << "This implementation only supports one output stream";
-            LOG(ERROR) << out_streams_;
+            LOG(ERROR) << "This implementation only supports one output stream but it is set to " << out_streams_;
         }
 }
 
diff --git a/src/core/receiver/gnss_flowgraph.cc b/src/core/receiver/gnss_flowgraph.cc
index 2e3666246..967c50807 100644
--- a/src/core/receiver/gnss_flowgraph.cc
+++ b/src/core/receiver/gnss_flowgraph.cc
@@ -736,9 +736,13 @@ int GNSSFlowgraph::connect_signal_conditioners()
                         {
                             std::string replace_me("copy");
                             size_t pos = reported_error.find(replace_me);
-                            size_t len = replace_me.length();
-                            reported_error.replace(pos, len, "PassThrough");
-                            help_hint_ += " * Blocks within the Signal Conditioner are connected with mismatched item size\n";
+                            while (pos != std::string::npos)
+                                {
+                                    size_t len = replace_me.length();
+                                    reported_error.replace(pos, len, "Pass_Through");
+                                    pos = reported_error.find(replace_me, pos + 1);
+                                }
+                            help_hint_ += " * Blocks within the Signal Conditioner are connected with mismatched input/ouput item size\n";
                             help_hint_ += "   Reported error: " + reported_error + '\n';
                             help_hint_ += "   Check the Signal Conditioner documentation at https://gnss-sdr.org/docs/sp-blocks/signal-conditioner/\n";
                         }
@@ -1088,8 +1092,12 @@ int GNSSFlowgraph::connect_signal_sources_to_signal_conditioners()
                         {
                             std::string replace_me("copy");
                             size_t pos = reported_error.find(replace_me);
-                            size_t len = replace_me.length();
-                            reported_error.replace(pos, len, "PassThrough");
+                            while (pos != std::string::npos)
+                                {
+                                    size_t len = replace_me.length();
+                                    reported_error.replace(pos, len, "Pass_Through");
+                                    pos = reported_error.find(replace_me, pos + 1);
+                                }
                             help_hint_ += " * The SignalSource output item size and the SignalConditioner input item size are mismatched\n";
                             help_hint_ += "   Reported error: " + reported_error + '\n';
                         }