diff --git a/libraries/libldap/filter.c b/libraries/libldap/filter.c
index ca00c60683..d2e74cb0a1 100644
--- a/libraries/libldap/filter.c
+++ b/libraries/libldap/filter.c
@@ -221,6 +221,7 @@ ldap_pvt_filter_value_unescape( char *fval )
 		switch( fval[v] ) {
 		case '(':
 		case ')':
+		case '*':
 			return -1;
 
 		case '\\':