diff --git a/include/vision/processor/processor_params_image.h b/include/vision/processor/processor_params_image.h
index 167c6d580b585cfdb16ffaeb5c4a8925bdeadba3..05145a7c67221a1a23f2fbafdf72fc18e2f5703b 100644
--- a/include/vision/processor/processor_params_image.h
+++ b/include/vision/processor/processor_params_image.h
@@ -30,7 +30,7 @@ struct ParamsProcessorTrackerFeatureImage : public ParamsProcessorTrackerFeature
         pixel_noise_std                 = _server.getParam<double>(_unique_name         + "/pixel_noise_std");
         pixel_noise_var                 = _server.getParam<double>(_unique_name         + "/pixel_noise_var");
     }
-    std::string print() const
+    std::string print() const override
     {
         return "\n" + ParamsProcessorTrackerFeature::print()                                    + "\n"
             + "yaml_file_params_vision_utils: " + yaml_file_params_vision_utils                 + "\n"
diff --git a/include/vision/processor/processor_tracker_feature_trifocal.h b/include/vision/processor/processor_tracker_feature_trifocal.h
index 9c3f86e80edf324bc5a84047d6bb590a8ce0aa37..907ada0d77caffbc692d54a4e321e90a255d8221 100644
--- a/include/vision/processor/processor_tracker_feature_trifocal.h
+++ b/include/vision/processor/processor_tracker_feature_trifocal.h
@@ -38,7 +38,7 @@ struct ParamsProcessorTrackerFeatureTrifocal : public ParamsProcessorTrackerFeat
         pixel_noise_std                 = _server.getParam<double>(_unique_name         + "/pixel_noise_std");
         min_track_length_for_factor     = _server.getParam<int>(_unique_name            + "/min_track_length_for_factor");
     }
-    std::string print() const
+    std::string print() const override
     {
         return "\n" + ParamsProcessorTrackerFeature::print()                                    + "\n"
             + "yaml_file_params_vision_utils: " + yaml_file_params_vision_utils                 + "\n"
diff --git a/include/vision/sensor/sensor_camera.h b/include/vision/sensor/sensor_camera.h
index 49f1a3ea6911a7548b11d0b3ad6985c910b0cb54..709050ac3c490faa4311cfb8897698ac4c592903 100644
--- a/include/vision/sensor/sensor_camera.h
+++ b/include/vision/sensor/sensor_camera.h
@@ -66,9 +66,9 @@ struct ParamsSensorCamera : public ParamsSensorBase
             distortion.tail<1>() = distortion.tail<1>();
         }
     }
-    std::string print() const
+    std::string print() const override
     {
-        return "\n" + ParamsSensorBase::print()                                             + "\n"
+        return ParamsSensorBase::print()                                             + "\n"
             + "width: "         + std::to_string(width)                                     + "\n"
             + "height: "        + std::to_string(height)                                    + "\n"
             + "pinhole: "       + converter<std::string>::convert(pinhole_model_raw)        + "\n"