diff --git a/servers/slapd/overlays/syncprov.c b/servers/slapd/overlays/syncprov.c
index 25637302f1..d1252182a1 100644
--- a/servers/slapd/overlays/syncprov.c
+++ b/servers/slapd/overlays/syncprov.c
@@ -28,7 +28,9 @@
 #include "config.h"
 #include "ldap_rq.h"
 
+#ifdef LDAP_DEVEL
 #define	CHECK_CSN	1
+#endif
 
 /* A modify request on a particular entry */
 typedef struct modinst {