diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py
--- a/test/functional/test_runner.py
+++ b/test/functional/test_runner.py
@@ -658,7 +658,7 @@
 def check_script_prefixes(all_scripts):
     """Check that no more than `EXPECTED_VIOLATION_COUNT` of the
        test scripts don't start with one of the allowed name prefixes."""
-    EXPECTED_VIOLATION_COUNT = 17
+    EXPECTED_VIOLATION_COUNT = 16
 
     # LEEWAY is provided as a transition measure, so that pull-requests
     # that introduce new tests that don't conform with the naming