diff --git a/dlls/ntdll/unix/env.c b/dlls/ntdll/unix/env.c
index eb75e6e949a..c9764e5c6e5 100644
--- a/dlls/ntdll/unix/env.c
+++ b/dlls/ntdll/unix/env.c
@@ -943,6 +943,7 @@ static void init_locale(void)
         if (preferred_langs) CFRelease( preferred_langs );
     }
 #endif
+    setlocale( LC_NUMERIC, "C" );  /* FIXME: oleaut32 depends on this */
 }