diff --git a/include/wx/filefn.h b/include/wx/filefn.h
index 1b102609ef..813357debe 100644
--- a/include/wx/filefn.h
+++ b/include/wx/filefn.h
@@ -560,7 +560,7 @@ public:
     // wxFileConfig::Flush() for example
     wxUmaskChanger(int umaskNew)
     {
-        m_umaskOld = umaskNew == -1 ? -1 : umask((mode_t)umaskNew);
+        m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
     }
 
     ~wxUmaskChanger()