1 files changed, 3 insertions, 3 deletions
diff --git a/test/functional/rpc_blockchain.py b/test/functional/rpc_blockchain.py
index af150a09af..6693042f84 100755
--- a/test/functional/rpc_blockchain.py
+++ b/test/functional/rpc_blockchain.py
@@ -172,9 +172,9 @@ class BlockchainTest(BitcoinTestFramework):
         assert_equal(chaintxstats['txcount'], 2)
         assert_equal(chaintxstats['window_final_block_hash'], b1_hash)
         assert_equal(chaintxstats['window_block_count'], 0)
-        assert('window_tx_count' not in chaintxstats)
-        assert('window_interval' not in chaintxstats)
-        assert('txrate' not in chaintxstats)
+        assert 'window_tx_count' not in chaintxstats
+        assert 'window_interval' not in chaintxstats
+        assert 'txrate' not in chaintxstats
 
     def _test_gettxoutsetinfo(self):
         node = self.nodes[0]