diff --git a/src/kernel/mempool_options.h b/src/kernel/mempool_options.h
index 96b25c0097..0bff59226e 100644
--- a/src/kernel/mempool_options.h
+++ b/src/kernel/mempool_options.h
@@ -19,8 +19,6 @@ static constexpr unsigned int DEFAULT_MAX_MEMPOOL_SIZE_MB{300};
 static constexpr unsigned int DEFAULT_BLOCKSONLY_MAX_MEMPOOL_SIZE_MB{5};
 /** Default for -mempoolexpiry, expiration time for mempool transactions in hours */
 static constexpr unsigned int DEFAULT_MEMPOOL_EXPIRY_HOURS{336};
-/** Default for -mempoolfullrbf, if the transaction replaceability signaling is ignored */
-static constexpr bool DEFAULT_MEMPOOL_FULL_RBF{false};
 /** Whether to fall back to legacy V1 serialization when writing mempool.dat */
 static constexpr bool DEFAULT_PERSIST_V1_DAT{false};
 /** Default for -acceptnonstdtxn */