1 files changed, 1 insertions, 1 deletions
diff --git a/std/std.zig b/std/std.zig
index 333896cadc..411f59b423 100644
--- a/std/std.zig
+++ b/std/std.zig
@@ -42,7 +42,7 @@ pub fn print_i64(x: i64) -> isize {
 /*
 // TODO error handling
 pub fn readline(buf: []u8) -> ?[]u8 {
-    var index = 0;
+    var index : usize = 0;
     while (index < buf.len) {
         // TODO unknown size array indexing operator
         const err = read(stdin_fileno, &buf.ptr[index], 1);