diff --git a/lbrynet/wallet/claim_proofs.py b/lbrynet/wallet/claim_proofs.py
index 4a393d5a9..87079565d 100644
--- a/lbrynet/wallet/claim_proofs.py
+++ b/lbrynet/wallet/claim_proofs.py
@@ -52,7 +52,7 @@ def verify_proof(proof, rootHash, name):
         if i == 0 and 'txhash' in proof and 'nOut' in proof and 'last takeover height' in proof:
             if len(proof['txhash']) != 64:
                 raise InvalidProofError("txhash was invalid: {}".format(proof['txhash']))
-            if not isinstance(proof['nOut'], (int,)):
+            if not isinstance(proof['nOut'], int):
                 raise InvalidProofError("nOut was invalid: {}".format(proof['nOut']))
             if not isinstance(proof['last takeover height'], (int,)):
                 raise InvalidProofError(