wallet: ensure m_min_change_target always covers change fee

1 files changed, 3 insertions, 3 deletions

diff --git a/src/wallet/coinselection.cpp b/src/wallet/coinselection.cpp
index 49e6bac462..37cc7e37c8 100644
--- a/src/wallet/coinselection.cpp
+++ b/src/wallet/coinselection.cpp
@@ -389,14 +389,14 @@ CAmount GetSelectionWaste(const std::set<COutput>& inputs, CAmount change_cost,
     return waste;
 }
 
-CAmount GenerateChangeTarget(CAmount payment_value, FastRandomContext& rng)
+CAmount GenerateChangeTarget(const CAmount payment_value, const CAmount change_fee, FastRandomContext& rng)
 {
     if (payment_value <= CHANGE_LOWER / 2) {
-        return CHANGE_LOWER;
+        return change_fee + CHANGE_LOWER;
     } else {
         // random value between 50ksat and min (payment_value * 2, 1milsat)
         const auto upper_bound = std::min(payment_value * 2, CHANGE_UPPER);
-        return rng.randrange(upper_bound - CHANGE_LOWER) + CHANGE_LOWER;
+        return change_fee + rng.randrange(upper_bound - CHANGE_LOWER) + CHANGE_LOWER;
     }
 }