diff --git a/dotnet/test/common/DevTools/DevToolsNetworkTest.cs b/dotnet/test/common/DevTools/DevToolsNetworkTest.cs
index 98d7291b725f4..36f88c6ebae72 100644
--- a/dotnet/test/common/DevTools/DevToolsNetworkTest.cs
+++ b/dotnet/test/common/DevTools/DevToolsNetworkTest.cs
@@ -386,9 +386,10 @@ public async Task VerifyRequestPostData()
                 if (string.Compare(e.Request.Method, "post", StringComparison.OrdinalIgnoreCase) == 0)
                 {
                     requestIds[0] = e.RequestId;
+                    requestSync.Set();
                 }
-                requestSync.Set();
             };
+
             domains.Network.RequestWillBeSent += requestWillBeSentHandler;
 
             driver.Url = EnvironmentManager.Instance.UrlBuilder.WhereIs("postForm.html");