diff --git a/servers/slapd/back-ldbm/alias.c b/servers/slapd/back-ldbm/alias.c
index bab9105a8ecccb7be4a210d3adf66391277e1ed6..f04428ad14f58f56baa45dc7a94e4f8a665eb51d 100644
--- a/servers/slapd/back-ldbm/alias.c
+++ b/servers/slapd/back-ldbm/alias.c
@@ -264,7 +264,7 @@ static char* get_alias_dn(
 	return dn;
 }
 
-char* new_superior(
+static char* new_superior(
 	const char *dn,
 	const char *oldSup,
 	const char *newSup )