diff --git a/include/gnss/processor/processor_gnss_fix.h b/include/gnss/processor/processor_gnss_fix.h
index c33561169a14bf491dd9f6f53d964b6f5a612183..fce80394e5c29fb52501b312d970a25b946052c5 100644
--- a/include/gnss/processor/processor_gnss_fix.h
+++ b/include/gnss/processor/processor_gnss_fix.h
@@ -49,7 +49,7 @@ class ProcessorGnssFix : public ProcessorBase
     public:
         ProcessorGnssFix(ProcessorParamsGnssFixPtr _params, SensorGnssPtr _sensor_gnss_ptr);
         virtual ~ProcessorGnssFix();
-        virtual void configure(SensorBasePtr _sensor);
+        virtual void configure(SensorBasePtr _sensor) override;
 
     protected:
         /** \brief process an incoming capture
@@ -77,7 +77,7 @@ class ProcessorGnssFix : public ProcessorBase
          */
         virtual bool triggerInKeyFrame(FrameBasePtr _keyframe_ptr, const Scalar& _time_tolerance) override {return false;}
 
-        virtual bool voteForKeyFrame();
+        virtual bool voteForKeyFrame() override;
 
     private:
         FactorBasePtr emplaceFactor(FeatureBasePtr& ftr_ptr);
diff --git a/include/gnss/processor/processor_gnss_single_diff.h b/include/gnss/processor/processor_gnss_single_diff.h
index 13645d45322506f10858940014b25ee1afcd3fcc..84f18c30b53bc0d61cdaa269814fdd8576e63061 100644
--- a/include/gnss/processor/processor_gnss_single_diff.h
+++ b/include/gnss/processor/processor_gnss_single_diff.h
@@ -49,7 +49,7 @@ class ProcessorGnssSingleDiff : public ProcessorBase
     public:
         ProcessorGnssSingleDiff(ProcessorParamsGnssSingleDiffPtr _params_gnss, SensorGnssPtr _sensor_gnss);
         virtual ~ProcessorGnssSingleDiff();
-        virtual void configure(SensorBasePtr _sensor);
+        virtual void configure(SensorBasePtr _sensor) override;
         FrameBasePtr getLastKF();
 
     protected:
@@ -78,7 +78,7 @@ class ProcessorGnssSingleDiff : public ProcessorBase
          */
         virtual bool triggerInKeyFrame(FrameBasePtr _keyframe, const Scalar& _time_tolerance) override {return false;}
 
-        virtual bool voteForKeyFrame();
+        virtual bool voteForKeyFrame() override;
 
 
     private: