diff --git a/src/glx/x11/dri2_glx.c b/src/glx/x11/dri2_glx.c
index 6200df94f7f..15a3ea59073 100644
--- a/src/glx/x11/dri2_glx.c
+++ b/src/glx/x11/dri2_glx.c
@@ -37,6 +37,7 @@
 #include <X11/extensions/Xdamage.h>
 #include "glapi.h"
 #include "glxclient.h"
+#include <X11/extensions/dri2proto.h>
 #include "xf86dri.h"
 #include <dlfcn.h>
 #include <fcntl.h>
diff --git a/src/glx/x11/glxext.c b/src/glx/x11/glxext.c
index dde694b9f8b..c2de1a3fff8 100644
--- a/src/glx/x11/glxext.c
+++ b/src/glx/x11/glxext.c
@@ -41,6 +41,7 @@
 #include "glxclient.h"
 #include <X11/extensions/Xext.h>
 #include <X11/extensions/extutil.h>
+#include <X11/extensions/dri2proto.h>
 #include "glxextensions.h"
 #include "glcontextmodes.h"