diff --git a/lib/rake/testtask.rb b/lib/rake/testtask.rb
index 4fb871e46..40218ae53 100644
--- a/lib/rake/testtask.rb
+++ b/lib/rake/testtask.rb
@@ -155,7 +155,7 @@ def file_list # :nodoc:
       else
         result = []
         result += @test_files.to_a if @test_files
-        result << @pattern if @pattern
+        result += FileList[@pattern].to_a if @pattern
         result
       end
     end