diff --git a/tools/python_test_v4.py b/tools/python_test_v4.py
index f9ea10230..26e048810 100644
--- a/tools/python_test_v4.py
+++ b/tools/python_test_v4.py
@@ -602,7 +602,7 @@
 # basic testing: only make sure that the methods exist
 mr.commits()
 mr.changes()
-#mr.participants()  # not yet available
+mr.participants()  # not yet available
 
 mr.merge()
 admin_project.branches.delete('branch1')