diff --git a/tests/scripts/check_schema.py b/tests/scripts/check_schema.py
index b320d5a3..12e3a3cf 100644
--- a/tests/scripts/check_schema.py
+++ b/tests/scripts/check_schema.py
@@ -11,7 +11,7 @@
 args = 3
 if len(sys.argv) != args:
     raise Exception(
-        "Usage: python check_schema.py <schema_file> <yaml_file>"
+        "Usage: python check_schema.py <schema_file> <yaml_file>",
     )
 
 schema_file = sys.argv[1]