diff --git a/gazebo_plugins/include/gazebo_plugins/gazebo_ros_multicamera.h b/gazebo_plugins/include/gazebo_plugins/gazebo_ros_multicamera.h
index 233194551..aa9970541 100644
--- a/gazebo_plugins/include/gazebo_plugins/gazebo_ros_multicamera.h
+++ b/gazebo_plugins/include/gazebo_plugins/gazebo_ros_multicamera.h
@@ -42,6 +42,8 @@ namespace gazebo
 
     std::vector<GazeboRosCameraUtils*> utils;
 
+    protected: void OnNewFrame(const unsigned char *_image,
+                   GazeboRosCameraUtils* util);
     /// \brief Update the controller
     /// FIXME: switch to function vectors
     protected: virtual void OnNewFrameLeft(const unsigned char *_image,