diff --git a/scitt/verify_receipt_signature.py b/scitt/verify_receipt_signature.py
index 2a09fde..7b6e48d 100644
--- a/scitt/verify_receipt_signature.py
+++ b/scitt/verify_receipt_signature.py
@@ -116,7 +116,7 @@ def verify_receipt(receipt: Sign1Message) -> bool:
     receipt.key = cose_key
 
     # verify the counter signed receipt signature
-    verified = receipt.verify_signature() # type: ignore
+    verified = receipt.verify_signature()  # type: ignore
 
     return verified