diff --git a/libraries/libldap/unbind.c b/libraries/libldap/unbind.c
index 11797c20c4..a25d05d638 100644
--- a/libraries/libldap/unbind.c
+++ b/libraries/libldap/unbind.c
@@ -187,6 +187,11 @@ ldap_ld_free(
 	}
 #endif
 
+	if ( ld->ld_options.ldo_defbase != NULL ) {
+		LDAP_FREE( ld->ld_options.ldo_defbase );
+		ld->ld_options.ldo_defbase = NULL;
+	}
+
 #ifdef HAVE_CYRUS_SASL
 	if ( ld->ld_options.ldo_def_sasl_mech != NULL ) {
 		LDAP_FREE( ld->ld_options.ldo_def_sasl_mech );