diff --git a/src/util/error.cpp b/src/util/error.cpp
--- a/src/util/error.cpp
+++ b/src/util/error.cpp
@@ -13,7 +13,7 @@
         case TransactionError::OK:
             return Untranslated("No error");
         case TransactionError::MISSING_INPUTS:
-            return Untranslated("Missing inputs");
+            return Untranslated("Inputs missing or spent");
         case TransactionError::ALREADY_IN_CHAIN:
             return Untranslated("Transaction already in block chain");
         case TransactionError::P2P_DISABLED:
@@ -24,13 +24,13 @@
         case TransactionError::MEMPOOL_ERROR:
             return Untranslated("AcceptToMemoryPool failed");
         case TransactionError::INVALID_PSBT:
-            return Untranslated("PSBT is not sane");
+            return Untranslated("PSBT is not well-formed");
         case TransactionError::PSBT_MISMATCH:
             return Untranslated(
                 "PSBTs not compatible (different transactions)");
         case TransactionError::SIGHASH_MISMATCH:
             return Untranslated(
-                "Specified sighash value does not match existing value");
+                "Specified sighash value does not match value stored in PSBT");
         case TransactionError::MAX_FEE_EXCEEDED:
             return Untranslated("Fee exceeds maximum configured by user (e.g. "
                                 "-maxtxfee, maxfeerate)");