1 files changed, 2 insertions, 2 deletions
diff --git a/src/fmt.cff b/src/fmt.cff
index 60ee5f9..b66004e 100644
--- a/src/fmt.cff
+++ b/src/fmt.cff
@@ -329,12 +329,12 @@ extern fn ssfmt(fmt *const u8, ...) *const u8 {
    let ap va_list #?;
    ap->start(fmt);
    fn sputc(c u8, arg *void) void {
-      let pidx *int = arg;
+      let pidx *uint = arg;
       if *pidx < buf.#len - 1 {
          buf[*pidx++] = c;
       }
    }
-   let idx = 0;
+   let idx = 0u;
    vpfmt(&sputc, &idx, fmt, ap);
    ap->end();
 }