diff --git a/gst-libs/gst/gl/Makefile.am b/gst-libs/gst/gl/Makefile.am
index 23c6d6cd3e..8ae13add69 100644
--- a/gst-libs/gst/gl/Makefile.am
+++ b/gst-libs/gst/gl/Makefile.am
@@ -95,7 +95,6 @@ nodist_libgstgl_@GST_API_VERSION@include_HEADERS = \
 libgstgl_@GST_API_VERSION@_la_CFLAGS = \
 	-I$(top_srcdir)/gst-libs \
 	$(GL_CFLAGS) \
-	$(X_CFLAGS) \
 	$(GST_PLUGINS_BASE_CFLAGS) \
 	$(GST_BASE_CFLAGS) \
 	$(GST_CFLAGS) \