diff --git a/lib/linguist/heuristics.rb b/lib/linguist/heuristics.rb
index 72484ba6..ee1a3625 100644
--- a/lib/linguist/heuristics.rb
+++ b/lib/linguist/heuristics.rb
@@ -61,6 +61,9 @@ module Linguist
       @heuristic.call(data)
     end
 
+    # Common heuristics
+    ObjectiveCRegex = /^[ \t]*@(interface|class|protocol|property|end|synchronised|selector|implementation)\b/
+
     disambiguate "BitBake", "BlitzBasic" do |data|
       if /^\s*; /.match(data) || data.include?("End Function")
         Language["BlitzBasic"]
@@ -78,7 +81,7 @@ module Linguist
     end
 
     disambiguate "Objective-C", "C++", "C" do |data|
-      if (/^[ \t]*@(interface|class|protocol|property|end|synchronised|selector|implementation)\b/.match(data))
+      if ObjectiveCRegex.match(data)
         Language["Objective-C"]
       elsif (/^\s*#\s*include <(cstdint|string|vector|map|list|array|bitset|queue|stack|forward_list|unordered_map|unordered_set|(i|o|io)stream)>/.match(data) ||
         /^\s*template\s*</.match(data) || /^[ \t]*try/.match(data) || /^[ \t]*catch\s*\(/.match(data) || /^[ \t]*(class|(using[ \t]+)?namespace)\s+\w+/.match(data) || /^[ \t]*(private|public|protected):$/.match(data) || /std::\w+/.match(data))
@@ -170,7 +173,7 @@ module Linguist
     end
 
     disambiguate "M", "Mathematica", "Matlab", "Mercury", "Objective-C" do |data|
-      if /^[ \t]*@(interface|class|protocol|property|end|synchronised|selector|implementation)\b/.match(data)
+      if ObjectiveCRegex.match(data)
         Language["Objective-C"]
       elsif data.include?(":- module")
         Language["Mercury"]