diff --git a/openbox/parse.h b/openbox/parse.h
index 3c649db1..9f9eda6d 100644
--- a/openbox/parse.h
+++ b/openbox/parse.h
@@ -2,7 +2,9 @@
 #define __parse_h
 
 #include <glib.h>
-#include "y.tab.h"
+#ifndef NO_Y_H
+#  include "y.tab.h"
+#endif
 
 typedef enum {
     TOKEN_REAL       = REAL,
diff --git a/openbox/parse.yacc b/openbox/parse.yacc
index e9b469e0..8043c04a 100644
--- a/openbox/parse.yacc
+++ b/openbox/parse.yacc
@@ -1,5 +1,8 @@
 %{
+#define NO_Y_H
 #include "parse.h"
+#undef NO_Y_H
+
 #ifdef HAVE_STDIO_H
 #  include <stdio.h>
 #endif