diff --git a/auto/generate_test_runner.rb b/auto/generate_test_runner.rb
index 865a22ce03a1b26f46b4d2bd9f9ff7748aabc162..d609fcbb755136ffd26e701131953127ae57f64a 100644
--- a/auto/generate_test_runner.rb
+++ b/auto/generate_test_runner.rb
@@ -157,7 +157,7 @@ class UnityTestRunnerGenerator
     mock_headers = []
     includes.each do |include_path|
       include_file = File.basename(include_path)
-      mock_headers << include_path if (include_file =~ /^mock/i)
+      mock_headers << include_path if (include_file =~ /^#{@options[:mock_prefix]}/i)
     end
     return mock_headers
   end