diff --git a/src/modelgauge/tests/safe_v1.py b/src/modelgauge/tests/safe_v1.py
index 7ad4e2e9..22624f97 100644
--- a/src/modelgauge/tests/safe_v1.py
+++ b/src/modelgauge/tests/safe_v1.py
@@ -191,7 +191,7 @@ class SafeTestVersion1(BaseSafeTestVersion1):
 
 
 def register_tests(cls, evaluator=None):
-    for locale in Locale:
+    for locale in [Locale.EN_US]:
         for hazard in cls.hazards:
             test_uid = BaseSafeTestVersion1.create_uid(hazard, locale, evaluator)
             if not test_uid in TESTS.keys():