diff --git a/gst-libs/gst/gl/gstglutils.h b/gst-libs/gst/gl/gstglutils.h
index fc08e8f85c..299b53b25d 100644
--- a/gst-libs/gst/gl/gstglutils.h
+++ b/gst-libs/gst/gl/gstglutils.h
@@ -25,6 +25,8 @@
 
 #include <gst/gl/gstgl_fwd.h>
 
+G_BEGIN_DECLS
+
 /**
  * GstGLContextProjection:
  *
@@ -111,4 +113,6 @@ gboolean gst_gl_handle_set_context (GstElement * element, GstContext * context,
 gboolean gst_gl_handle_context_query (GstElement * element, GstQuery * query, 
     GstGLDisplay ** display);
 
+G_END_DECLS
+
 #endif /* __GST_GL_UTILS_H__ */