diff --git a/include/vision/processor/processor_params_image.h b/include/vision/processor/processor_params_image.h
index 05145a7c67221a1a23f2fbafdf72fc18e2f5703b..05960f1e2598330f1745abcd18ea49791c572b2f 100644
--- a/include/vision/processor/processor_params_image.h
+++ b/include/vision/processor/processor_params_image.h
@@ -64,7 +64,7 @@ struct ParamsProcessorTrackerLandmarkImage : public ParamsProcessorTrackerLandma
             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" + ParamsProcessorTrackerLandmark::print()                                       + "\n"
                     + "yaml_file_params_vision_utils: " + yaml_file_params_vision_utils                 + "\n"