diff --git a/tests/daemon/face/tcp.t.cpp b/tests/daemon/face/tcp.t.cpp
index cbb3946..2548dcd 100644
--- a/tests/daemon/face/tcp.t.cpp
+++ b/tests/daemon/face/tcp.t.cpp
@@ -171,8 +171,10 @@
   void
   face1_onFail()
   {
-    face1.reset();
-    limitedIo.afterOp();
+    g_io.post([this] {
+      face1.reset();
+      limitedIo.afterOp();
+    });
   }
 
   void
@@ -214,8 +216,10 @@
   void
   face2_onFail()
   {
-    face2.reset();
-    limitedIo.afterOp();
+    g_io.post([this] {
+      face2.reset();
+      limitedIo.afterOp();
+    });
   }
 
   void