diff --git a/lib/hard-locale.c b/lib/hard-locale.c
index 8ce6fddc9..1c75b390a 100644
--- a/lib/hard-locale.c
+++ b/lib/hard-locale.c
@@ -56,7 +56,7 @@ hard_locale (int category)
 #else
 
   int hard = 1;
-  char const *p = setlocale (category, "");
+  char const *p = setlocale (category, 0);
 
   if (p)
     {