diff --git a/src/d3d9/d3d9_swapchain.cpp b/src/d3d9/d3d9_swapchain.cpp
index fb501fe08..1c2c23b1e 100644
--- a/src/d3d9/d3d9_swapchain.cpp
+++ b/src/d3d9/d3d9_swapchain.cpp
@@ -144,6 +144,14 @@ namespace dxvk {
         }
       }
     }
+    else if (message == WM_SIZE)
+    {
+      D3DDEVICE_CREATION_PARAMETERS create_parms;
+      windowData.swapchain->GetDevice()->GetCreationParameters(&create_parms);
+
+      if (!(create_parms.BehaviorFlags & D3DCREATE_NOWINDOWCHANGES) && !IsIconic(window))
+        PostMessageW(window, WM_ACTIVATEAPP, 1, GetCurrentThreadId());
+    }
 
     return CallCharsetFunction(
       CallWindowProcW, CallWindowProcA, unicode,
@@ -1370,4 +1378,4 @@ namespace dxvk {
     return this->GetParent()->IsExtended() ? "D3D9Ex" : "D3D9";
   }
 
-}
\ No newline at end of file
+}