diff --git a/ext/gl/caopengllayersink.h b/ext/gl/caopengllayersink.h
index 25bc10650b..c2710033de 100644
--- a/ext/gl/caopengllayersink.h
+++ b/ext/gl/caopengllayersink.h
@@ -26,6 +26,7 @@
 #include <gst/video/video.h>
 
 #include <gst/gl/gl.h>
+#include <gst/gl/gstglfuncs.h>
 #include <gst/gl/cocoa/gstglcaopengllayer.h>
 
 G_BEGIN_DECLS
diff --git a/ext/gl/gstgltransformation.h b/ext/gl/gstgltransformation.h
index a767be2e4e..205f1a48fd 100644
--- a/ext/gl/gstgltransformation.h
+++ b/ext/gl/gstgltransformation.h
@@ -22,6 +22,7 @@
 #define _GST_GL_TRANSFORMATION_H_
 
 #include <gst/gl/gstglfilter.h>
+#include <gst/gl/gstglfuncs.h>
 #include <graphene.h>
 
 G_BEGIN_DECLS