diff --git a/src/backend.c b/src/backend.c
index 45fe536..39791f6 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -1255,6 +1255,7 @@
 					MT_LIST_ADDQ(&toremove_connections[i],
 					    (struct mt_list *)&tokill_conn->list);
 					task_wakeup(idle_conn_cleanup[i], TASK_WOKEN_OTHER);
+					HA_SPIN_UNLOCK(OTHER_LOCK, &toremove_lock[tid]);
 					break;
 				}
 				HA_SPIN_UNLOCK(OTHER_LOCK, &toremove_lock[tid]);