diff --git a/src/common/filefn.cpp b/src/common/filefn.cpp
index 293e8e787c..4cfc2036a1 100644
--- a/src/common/filefn.cpp
+++ b/src/common/filefn.cpp
@@ -1003,7 +1003,7 @@ wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
     // instead of our code if available
     //
     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
-    return ::CopyFile(file1, file2, !overwrite);
+    return ::CopyFile(file1, file2, !overwrite) != 0;
 #else // !Win32
     wxStructStat fbuf;