diff --git a/src/sim_explorer/case.py b/src/sim_explorer/case.py
index 9fd9c71..a154c13 100644
--- a/src/sim_explorer/case.py
+++ b/src/sim_explorer/case.py
@@ -11,7 +11,7 @@
 import numpy as np
 from libcosimpy.CosimLogging import CosimLogLevel, log_output_level  # type: ignore
 
-from sim_explorer.assertion import Assertion # type: ignore
+from sim_explorer.assertion import Assertion  # type: ignore
 from sim_explorer.exceptions import CaseInitError
 from sim_explorer.json5 import Json5
 from sim_explorer.models import AssertionResult, Temporal