diff --git a/test/unit/issue_test.rb b/test/unit/issue_test.rb
index 2227eddab..a09da8fbb 100644
--- a/test/unit/issue_test.rb
+++ b/test/unit/issue_test.rb
@@ -562,7 +562,7 @@ class IssueTest < ActiveSupport::TestCase
       assert_equal 2, assignable_user_ids.length
       
       assignable_user_ids.each do |user_id|
-        assert_equal 1, assignable_user_ids.count(user_id), "User #{user_id} appears more or less than once"
+        assert_equal 1, assignable_user_ids.select {|i| i == user_id}.length, "User #{user_id} appears more or less than once"
       end
     end
   end