diff --git a/cogl/cogl-xlib.h b/cogl/cogl-xlib.h
index 7a6bc7ef0..5dab8aece 100644
--- a/cogl/cogl-xlib.h
+++ b/cogl/cogl-xlib.h
@@ -79,6 +79,8 @@ cogl_xlib_set_display (Display *display);
 CoglFilterReturn
 cogl_xlib_handle_event (XEvent *xevent);
 
+COGL_END_DECLS
+
 #undef __COGL_XLIB_H_INSIDE__
 
 #endif /* __COGL_XLIB_H__ */