diff --git a/servers/slapd/back-ldbm/proto-back-ldbm.h b/servers/slapd/back-ldbm/proto-back-ldbm.h
index 3da9948d06..550bbfd533 100644
--- a/servers/slapd/back-ldbm/proto-back-ldbm.h
+++ b/servers/slapd/back-ldbm/proto-back-ldbm.h
@@ -39,7 +39,7 @@ void attr_mask LDAP_P(( struct ldbminfo *li,
 
 int attr_index_config LDAP_P(( struct ldbminfo *li,
 	const char *fname, int lineno,
-	int argc, char **argv, int init ));
+	int argc, char **argv ));
 void attr_index_destroy LDAP_P(( Avlnode *tree ));
 
 /*