diff --git a/bar.c b/bar.c
index 4176d3a..4aba04e 100644
--- a/bar.c
+++ b/bar.c
@@ -33,7 +33,7 @@ fillrect (int color, int x, int y, int width, int height)
 size_t
 wcslen_ (wchar_t *s) { 
     size_t len; 
-    for (len = 0; *s; s++);
+    for (len = 0; *s; s++, len++);
     return len;
 }