diff --git a/gst-libs/gst/audio/gstaudioutilsprivate.h b/gst-libs/gst/audio/gstaudioutilsprivate.h
index 553af0a698..a7cf96b02c 100644
--- a/gst-libs/gst/audio/gstaudioutilsprivate.h
+++ b/gst-libs/gst/audio/gstaudioutilsprivate.h
@@ -31,6 +31,7 @@
 G_BEGIN_DECLS
 
 /* Element utility functions */
+G_GNUC_INTERNAL
 GstCaps *__gst_audio_element_proxy_getcaps (GstElement * element, GstPad * sinkpad,
                                             GstPad * srcpad, GstCaps * initial_caps,
                                             GstCaps * filter);
diff --git a/gst-libs/gst/video/gstvideoutilsprivate.h b/gst-libs/gst/video/gstvideoutilsprivate.h
index ac5105eb56..a968790dd7 100644
--- a/gst-libs/gst/video/gstvideoutilsprivate.h
+++ b/gst-libs/gst/video/gstvideoutilsprivate.h
@@ -31,6 +31,7 @@
 G_BEGIN_DECLS
 
 /* Element utility functions */
+G_GNUC_INTERNAL
 GstCaps *__gst_video_element_proxy_getcaps (GstElement * element, GstPad * sinkpad,
                                             GstPad * srcpad, GstCaps * initial_caps,
                                             GstCaps * filter);