# MutantHub mutant #3889: Logical operator mutation at operation_patterns.ipp:183
# Repository: libbitcoin/libbitcoin-system @ c37c9b73278f1f97e6eb6421f3544f5e58edba2f
# File: include/bitcoin/system/impl/chain/operation_patterns.ipp:183-183
# Review: APPROVED; outcome: KILLED
--- a/include/bitcoin/system/impl/chain/operation_patterns.ipp
+++ b/include/bitcoin/system/impl/chain/operation_patterns.ipp
@@ -183,1 +183,1 @@
-    return code == op_0 || is_positive(code);
+    return code == op_0 && is_positive(code);