diff --git a/innobase/include/univ.i b/innobase/include/univ.i
index 4854e5a7b78..12846593977 100644
--- a/innobase/include/univ.i
+++ b/innobase/include/univ.i
@@ -86,8 +86,10 @@ memory is read outside the allocated blocks. */
 
 /* Make a non-inline debug version */
 
+#ifdef DBUG_ON
+# define UNIV_DEBUG
+#endif /* DBUG_ON */
 /*
-#define UNIV_DEBUG
 #define UNIV_SYNC_DEBUG
 #define UNIV_MEM_DEBUG