diff --git a/src/x11/glcanvas.cpp b/src/x11/glcanvas.cpp
index cac1674d9f..2af81c1626 100644
--- a/src/x11/glcanvas.cpp
+++ b/src/x11/glcanvas.cpp
@@ -18,6 +18,8 @@
 
 #if wxUSE_GLCANVAS
 
+#error Sorry, wxGLCanvas does not work yet with wxX11
+
 #include "wx/glcanvas.h"
 #include "wx/utils.h"
 #include "wx/app.h"