diff --git a/servers/slapd/ad.c b/servers/slapd/ad.c
index 701534a766..e2a028c90d 100644
--- a/servers/slapd/ad.c
+++ b/servers/slapd/ad.c
@@ -204,7 +204,7 @@ int is_ad_subtype(
 		return 0;
 	}
 
-	if( super->ad_flags && ( super->ad_flags == sub->ad_flags )) {
+	if( super->ad_flags && ( super->ad_flags != sub->ad_flags )) {
 		return 0;
 	}