diff --git a/src/feeder/scanner.rs b/src/feeder/scanner.rs
index 40fd075b..6e75095b 100644
--- a/src/feeder/scanner.rs
+++ b/src/feeder/scanner.rs
@@ -125,8 +125,8 @@ impl Feeder {
     }
 
     pub fn scanner_name(&mut self, core: &mut ShellCore) -> usize {
-        let c = self.remaining.chars().nth(0).unwrap_or('0');
-        if '0' <= c && c <= '9' {
+        let head = self.remaining.chars().nth(0).unwrap_or('0');
+        if '0' <= head && head <= '9' {
             return 0;
         }