diff --git a/fc-list/fc-list.c b/fc-list/fc-list.c
index 6416331..997a6ac 100644
--- a/fc-list/fc-list.c
+++ b/fc-list/fc-list.c
@@ -135,7 +135,7 @@ main (int argc, char **argv)
 	pat = FcPatternCreate ();
     
     if (!os)
-	os = FcObjectSetBuild (FC_FAMILY, FC_STYLE, 0);
+	os = FcObjectSetBuild (FC_FAMILY, FC_STYLE, (char *) 0);
     fs = FcFontList (0, pat, os);
     if (pat)
 	FcPatternDestroy (pat);