diff --git a/src/hooks.rs b/src/hooks.rs
index 2429dca..b51a47f 100644
--- a/src/hooks.rs
+++ b/src/hooks.rs
@@ -87,7 +87,7 @@ impl Hook {
                             if let Some('}') = command_template.next() {
                                 let expr = token.trim().split(' ').collect::<Vec<&str>>();
 
-                                let replaced = match expr.get(0) {
+                                let replaced = match expr.first() {
                                     Some(&"header") => get_header_field(
                                         headers,
                                         expr.get(1).ok_or_else(|| {