diff --git a/src/days/day01.zig b/src/days/day01.zig
index c0c05ed..afc14bf 100644
--- a/src/days/day01.zig
+++ b/src/days/day01.zig
@@ -60,6 +60,8 @@ fn updatePosition(
         var mod = @mod(signed_position, signed_upper_bound);
         if (signed_position < 0) mod += 1;
         position.* = @intCast(mod);
+    } else {
+        position.* = @intCast(signed_position);
     }
 }