Convert another %s to %ls.
diff --git a/Modules/main.c b/Modules/main.c
index 81a3d46..4af2e77 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -539,7 +539,7 @@
 
 		if (sts==-1 && filename!=NULL) {
 			if ((fp = _wfopen(filename, L"r")) == NULL) {
-				fprintf(stderr, "%s: can't open file '%ls': [Errno %d] %s\n",
+				fprintf(stderr, "%ls: can't open file '%ls': [Errno %d] %s\n",
 					argv[0], filename, errno, strerror(errno));
 
 				return 2;