diff --git a/lib/linguist/language.rb b/lib/linguist/language.rb
index 2794c23f..53ce777e 100644
--- a/lib/linguist/language.rb
+++ b/lib/linguist/language.rb
@@ -110,8 +110,8 @@ module Linguist
       # A bit of an elegant hack. If the file is executable but extensionless,
       # append a "magic" extension so it can be classified with other
       # languages that have shebang scripts.
-      extension = FileBlob.new(name).extension
-      if extension.empty? && blob.mode && (blob.mode.to_i(8) & 05) == 05
+      extensions = FileBlob.new(name).extensions
+      if extensions.empty? && blob.mode && (blob.mode.to_i(8) & 05) == 05
         name += ".script!"
       end