diff --git a/src/msw/mdi.cpp b/src/msw/mdi.cpp
index 2a7c8f717a..626131f0be 100644
--- a/src/msw/mdi.cpp
+++ b/src/msw/mdi.cpp
@@ -1064,7 +1064,7 @@ bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
         processed = true;
     }
 
-    return true;
+    return processed;
 }
 
 // ---------------------------------------------------------------------------