diff --git a/lib/linguist/shebang.rb b/lib/linguist/shebang.rb
index 7fa021cc..55481f69 100644
--- a/lib/linguist/shebang.rb
+++ b/lib/linguist/shebang.rb
@@ -34,7 +34,7 @@ module Linguist
 
       # Check for multiline shebang hacks that call `exec`
       if script == 'sh' &&
-        lines[0...5].any? { |l| l.match(/exec (\w+).+\$0.+\$@/) }
+        lines.first(5).any? { |l| l.match(/exec (\w+).+\$0.+\$@/) }
         script = $1
       end