diff --git a/include/proto/connection.h b/include/proto/connection.h
index 45b8a8a..3bfad58 100644
--- a/include/proto/connection.h
+++ b/include/proto/connection.h
@@ -698,7 +698,7 @@
 	}
 
 	conn_force_unsubscribe(conn);
-	LIST_DEL(&conn->list);
+	LIST_DEL_LOCKED(&conn->list);
 	LIST_INIT(&conn->list);
 	pool_free(pool_head_connection, conn);
 }
diff --git a/include/proto/server.h b/include/proto/server.h
index 9467f69..82c9cbf 100644
--- a/include/proto/server.h
+++ b/include/proto/server.h
@@ -252,7 +252,7 @@
 			return 0;
 		}
 		LIST_DEL(&conn->list);
-		LIST_ADDQ(&srv->idle_orphan_conns[tid], &conn->list);
+		LIST_ADDQ_LOCKED(&srv->idle_orphan_conns[tid], &conn->list);
 		srv->curr_idle_thr[tid]++;
 
 		conn->idle_time = now_ms;