diff --git a/include/core/sensor/sensor_diff_drive.h b/include/core/sensor/sensor_diff_drive.h
index cb08a2dd0ccb7967158aa2d9319d9b1fe210670b..212a955b19c1a76aecebaa90f7cc39be73f38a7a 100644
--- a/include/core/sensor/sensor_diff_drive.h
+++ b/include/core/sensor/sensor_diff_drive.h
@@ -37,7 +37,7 @@ struct ParamsSensorDiffDrive : public ParamsSensorBase
         prior_cov_diag             = _server.getParam<Eigen::Vector3d>(prefix + _unique_name + "/prior_cov_diag");
         ticks_cov_factor           = _server.getParam<double>(prefix + _unique_name + "/ticks_cov_factor");
     }
-    std::string print() const
+    std::string print() const override
     {
         return ParamsSensorBase::print()                                         + "\n"
         + "radius_left: "                   + std::to_string(radius_left)               + "\n"