diff --git a/seq/seq.rs b/seq/seq.rs
index 814a8ff7d..188b44fd2 100644
--- a/seq/seq.rs
+++ b/seq/seq.rs
@@ -229,7 +229,7 @@ fn done_printing(next: f64, step: f64, last: f64) -> bool {
 }
 
 fn print_seq(first: f64, step: f64, last: f64, largest_dec: uint, separator: String, terminator: String, pad: bool, padding: uint) {
-    let mut i = 0;
+    let mut i = 0i;
     let mut value = first + i as f64 * step;
     while !done_printing(value, step, last) {
         let istr = value.to_str();