diff --git a/src/processor/processor_tracker_gnss.cpp b/src/processor/processor_tracker_gnss.cpp
index 1682d65de64ed88c72d5e18419a94a29e3244431..81fc43a2c953474cc951dcab7d771d6716ee35d9 100644
--- a/src/processor/processor_tracker_gnss.cpp
+++ b/src/processor/processor_tracker_gnss.cpp
@@ -207,7 +207,8 @@ unsigned int ProcessorTrackerGnss::trackFeatures(const FeatureBasePtrList& _feat
     if (_features_in.empty())
         return 0;
 
-    //WOLF_DEBUG("tracking " , _features_in.size() , " features...");
+    WOLF_DEBUG_COND(_features_out.begin() == new_features_incoming_.begin(), "ProcessorTrackerGnss::trackFeatures tracking " , _features_in.size() , " new features...");
+    WOLF_DEBUG_COND(_features_out.begin() == known_features_incoming_.begin(), "ProcessorTrackerGnss::trackFeatures tracking " , _features_in.size() , " known features...");
 
     assert(_capture == incoming_ptr_);
 
@@ -241,10 +242,16 @@ unsigned int ProcessorTrackerGnss::trackFeatures(const FeatureBasePtrList& _feat
             WOLF_DEBUG_COND(untracked_incoming_features_.count(sat_num) == 1, "\tnot tracked, wrong carrier phase value" );
         }
     }
-    WOLF_WARN_COND(_features_out.empty() and not _features_in.empty(),
+    WOLF_WARN_COND(_features_out.empty() and
+                   _features_out.begin() == known_features_incoming_.begin(),
                    "ProcessorTrackerGnss::trackFeatures: LOST TRACK OF ALL SATELLITES of ", _features_in.size(),
-                   " - ", common_sats, " wrong Carrier Phase info.");
-    WOLF_DEBUG("ProcessorTrackerGnss::trackFeatures: tracked " , _features_out.size(), " (of ", _features_in.size(), ")");
+                   " - ", common_sats, " due to wrong Carrier Phase data.");
+    WOLF_DEBUG_COND(_features_out.begin() == new_features_incoming_.begin(),
+                    "ProcessorTrackerGnss::trackFeatures: tracked " ,
+                    _features_out.size(), " new features (of ", _features_in.size(), ")");
+    WOLF_DEBUG_COND(_features_out.begin() == known_features_incoming_.begin(),
+                    "ProcessorTrackerGnss::trackFeatures: tracked " ,
+                    _features_out.size(), " known features (of ", _features_in.size(), ")");
 
     return _features_out.size();
 }