diff --git a/src/days/d11.rs b/src/days/d11.rs
index 29204b7..14e1cff 100644
--- a/src/days/d11.rs
+++ b/src/days/d11.rs
@@ -81,7 +81,7 @@ impl Monkey {
             inspections: 0
         };
         input.split("\n").filter(|line| *line != "").for_each(|line| {
-            let (ident, mut val) = line.split_at(line.find(":").unwrap());
+            let (ident, val) = line.split_at(line.find(":").unwrap());
             match ident {
                 "  Starting items" => {
                     // remove whitespace and beginning, split by ,