diff --git a/test/test/disconnected.cpp b/test/test/disconnected.cpp
index 816344c35..ac97f8477 100644
--- a/test/test/disconnected.cpp
+++ b/test/test/disconnected.cpp
@@ -105,6 +105,8 @@ TEST_CASE("disconnected,handler,3")
         });
 
     WaitForSingleObject(signal.get(), INFINITE);
+    // Give some time for to_hresult() to complete.
+    Sleep(500);
 }
 
 TEST_CASE("disconnected,handler,4")
@@ -134,6 +136,8 @@ TEST_CASE("disconnected,handler,5")
         });
 
     WaitForSingleObject(signal.get(), INFINITE);
+    // Give some time for to_hresult() to complete.
+    Sleep(500);
 }
 
 // Custom action to simulate an out-of-process server that crashes before it can complete.
diff --git a/test/test_win7/disconnected.cpp b/test/test_win7/disconnected.cpp
index 17411e99e..1757937d0 100644
--- a/test/test_win7/disconnected.cpp
+++ b/test/test_win7/disconnected.cpp
@@ -94,6 +94,8 @@ TEST_CASE("disconnected,3")
         });
 
     WaitForSingleObject(signal.get(), INFINITE);
+    // Give some time for to_hresult() to complete.
+    Sleep(500);
 }
 
 TEST_CASE("disconnected,4")
@@ -123,4 +125,6 @@ TEST_CASE("disconnected,5")
         });
 
     WaitForSingleObject(signal.get(), INFINITE);
+    // Give some time for to_hresult() to complete.
+    Sleep(500);
 }