diff --git a/src/sentry/api/endpoints/organization_trace_item_attributes.py b/src/sentry/api/endpoints/organization_trace_item_attributes.py
index 91d79147e18537..7bddb1a1410ae8 100644
--- a/src/sentry/api/endpoints/organization_trace_item_attributes.py
+++ b/src/sentry/api/endpoints/organization_trace_item_attributes.py
@@ -539,6 +539,8 @@ def semver_build_autocomplete_function(self):
         ]
 
     def semver_package_autocomplete_function(self):
+        assert self.snuba_params.organization_id is not None
+
         packages = (
             Release.objects.filter(
                 organization_id=self.snuba_params.organization_id, package__startswith=self.query