diff --git a/src/tests/Interop/COM/ComWrappers/API/Program.cs b/src/tests/Interop/COM/ComWrappers/API/Program.cs
index 8204ce75f6a903..a87ba2e79a6906 100644
--- a/src/tests/Interop/COM/ComWrappers/API/Program.cs
+++ b/src/tests/Interop/COM/ComWrappers/API/Program.cs
@@ -1084,6 +1084,7 @@ public unsafe void CrossApartmentQueryInterface_NoDeadlock()
 
                 staThread.Start();
                 mtaThread.Start();
+                testCompleted.WaitOne();
             }
             finally
             {
@@ -1092,8 +1093,6 @@ public unsafe void CrossApartmentQueryInterface_NoDeadlock()
                     Marshal.Release(agileReference);
                 }
             }
-
-            testCompleted.WaitOne();
         }
 
         [DllImport("ole32.dll")]