diff --git a/src/wallet/asyncrpcoperation_shieldcoinbase.h b/src/wallet/asyncrpcoperation_shieldcoinbase.h
index 8ef85bdc0..121d214b9 100644
--- a/src/wallet/asyncrpcoperation_shieldcoinbase.h
+++ b/src/wallet/asyncrpcoperation_shieldcoinbase.h
@@ -97,7 +97,7 @@ private:
     CAmount sendAmount;
     uint8_t donation = 0;
 public:
-    ShieldToAddress(AsyncRPCOperation_shieldcoinbase *op, CAmount sendAmount, bool donation) :
+    ShieldToAddress(AsyncRPCOperation_shieldcoinbase *op, CAmount sendAmount, uint8_t donation) :
         m_op(op), sendAmount(sendAmount), donation(donation) {}
 
     bool operator()(const libzcash::SaplingPaymentAddress &zaddr) const;