diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index c629b672fe..f12bfbfc1a 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1659,9 +1659,9 @@ bool DummySignInput(const SigningProvider& provider, CMutableTransaction& tx, co
     const CScript& scriptPubKey = txout.scriptPubKey;
     SignatureData sigdata;
 
-    // Use max sig if watch only inputs were used or if this particular input is an external input
-    // to ensure a sufficient fee is attained for the requested feerate.
     const CTxIn& tx_in = tx.vin[nIn];
+    // Use max sig if watch only inputs were used, if this particular input is an external input,
+    // or if this wallet uses an external signer, to ensure a sufficient fee is attained for the requested feerate.
     const bool use_max_sig = coin_control && (coin_control->fAllowWatchOnly || coin_control->IsExternalSelected(tx_in.prevout) || !can_grind_r);
     if (!ProduceSignature(provider, use_max_sig ? DUMMY_MAXIMUM_SIGNATURE_CREATOR : DUMMY_SIGNATURE_CREATOR, scriptPubKey, sigdata)) {
         return false;