diff --git a/src/lib-ldap/ldap-connection.c b/src/lib-ldap/ldap-connection.c
index be9f89b33e..31a27cf513 100644
--- a/src/lib-ldap/ldap-connection.c
+++ b/src/lib-ldap/ldap-connection.c
@@ -572,7 +572,7 @@ void ldap_connection_kill(struct ldap_connection *conn)
 		}
 	}
 	if (conn->conn != NULL) {
-		ldap_destroy(conn->conn);
+		ldap_unbind_ext(conn->conn, NULL, NULL);
 		ldap_memfree(conn->scred);
 	}
 	conn->conn = NULL;