diff --git a/lib/bitcoin_rpc.py b/lib/bitcoin_rpc.py
index 7f23839..58035b6 100644
--- a/lib/bitcoin_rpc.py
+++ b/lib/bitcoin_rpc.py
@@ -117,7 +117,7 @@ class BitcoinRPC(object):
         if json.loads(resp)['result'] == None:
             # make sure the block was created.
             log.info("CHECKING FOR BLOCK AFTER SUBMITBLOCK")
-	    defer.returnValue((yield self.blockexists(hash_hex, scrypt_hex)))
+            defer.returnValue((yield self.blockexists(hash_hex, scrypt_hex)))
         else:
             defer.returnValue(False)