diff --git a/include/bitcoin/system/chain/transaction.hpp b/include/bitcoin/system/chain/transaction.hpp
index c0a4897796..22f4a3526c 100644
--- a/include/bitcoin/system/chain/transaction.hpp
+++ b/include/bitcoin/system/chain/transaction.hpp
@@ -263,7 +263,7 @@ class BC_API transaction
 
     // Signature and identity hash cashing (witness hash if witnessed).
     mutable std::unique_ptr<hash_cache> cache_{};
-    mutable std::unique_ptr<const hash_digest> hash_{};
+    mutable std::unique_ptr<const hash_digest> nominal_hash_{};
     mutable std::unique_ptr<const hash_digest> witness_hash_{};
 };
 
diff --git a/src/chain/transaction.cpp b/src/chain/transaction.cpp
index aaeb372c55..f14c6f1721 100644
--- a/src/chain/transaction.cpp
+++ b/src/chain/transaction.cpp
@@ -410,7 +410,7 @@ uint64_t transaction::fee() const NOEXCEPT
 void transaction::set_hash(hash_digest&& hash) const NOEXCEPT
 {
     BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
-    hash_ = std::make_unique<const hash_digest>(std::move(hash));
+    nominal_hash_ = std::make_unique<const hash_digest>(std::move(hash));
     BC_POP_WARNING()
 }
 
@@ -435,12 +435,12 @@ hash_digest transaction::hash(bool witness) const NOEXCEPT
         }
         else
         {
-            if (hash_) return *hash_;
+            if (nominal_hash_) return *nominal_hash_;
         }
     }
     else
     {
-        if (hash_) return *hash_;
+        if (nominal_hash_) return *nominal_hash_;
         if (witness_hash_) return *witness_hash_;
     }