diff --git a/gst-libs/gst/gl/cocoa/gstglcaopengllayer.m b/gst-libs/gst/gl/cocoa/gstglcaopengllayer.m
index d6148d1e78..d4a03329b5 100644
--- a/gst-libs/gst/gl/cocoa/gstglcaopengllayer.m
+++ b/gst-libs/gst/gl/cocoa/gstglcaopengllayer.m
@@ -44,6 +44,7 @@
 
   self->gst_gl_context = parent_gl_context;
   self.asynchronous = YES;
+  self.opaque = YES;
   self.needsDisplayOnBoundsChange = YES;
 
   return self;