diff --git a/modules/juce_graphics/native/juce_DirectX_windows.cpp b/modules/juce_graphics/native/juce_DirectX_windows.cpp
index be8b59c7cc..ccbd6caef9 100644
--- a/modules/juce_graphics/native/juce_DirectX_windows.cpp
+++ b/modules/juce_graphics/native/juce_DirectX_windows.cpp
@@ -375,9 +375,15 @@ void UpdateRegion::findRECTAndValidate (HWND windowHandle)
     const ScopeGuard regionDeleter { [&] { DeleteObject (regionHandle); } };
     const auto regionType = GetUpdateRgn (windowHandle, regionHandle, false);
 
-    if (regionType == ERROR || regionType == NULLREGION)
+    if (regionType == ERROR)
         return;
 
+    if (regionType == NULLREGION)
+    {
+        ValidateRect (windowHandle, nullptr);
+        return;
+    }
+
     const auto requiredBytes = GetRegionData (regionHandle, 0, nullptr);
     block.ensureSize (requiredBytes);