diff --git a/lib/linguist/strategy/modeline.rb b/lib/linguist/strategy/modeline.rb
index 6a07fe3f..f8d8d52a 100644
--- a/lib/linguist/strategy/modeline.rb
+++ b/lib/linguist/strategy/modeline.rb
@@ -1,7 +1,7 @@
 module Linguist
   module Strategy
     class Modeline
-      EmacsModeline = /-\*-\s*(?:mode:)?\s*(\w+);?\s*-\*-/
+      EmacsModeline = /-\*-\s*mode:\s*(\w+);?\s*-\*-/
       VimModeline = /\/\*\s*vim:\s*set\s*(?:ft|filetype)=(\w+):\s*\*\//
 
       # Public: Detects language based on Vim and Emacs modelines
diff --git a/test/fixtures/Data/Modelines/example_smalltalk.md b/test/fixtures/Data/Modelines/example_smalltalk.md
index 6a927e40..edf4bc13 100644
--- a/test/fixtures/Data/Modelines/example_smalltalk.md
+++ b/test/fixtures/Data/Modelines/example_smalltalk.md
@@ -1 +1 @@
-; -*-Smalltalk-*-
+; -*-mode:Smalltalk-*-