diff --git a/src/ripple/app/tx/impl/NFTokenMint.cpp b/src/ripple/app/tx/impl/NFTokenMint.cpp
index 218df865482..2a63f8893fa 100644
--- a/src/ripple/app/tx/impl/NFTokenMint.cpp
+++ b/src/ripple/app/tx/impl/NFTokenMint.cpp
@@ -38,7 +38,7 @@ NFTokenMint::preflight(PreflightContext const& ctx)
         return temDISABLED;
 
     if (!ctx.rules.enabled(featureNFTokenMintOffer) &&
-        (ctx.tx[sfAmount] || ctx.tx[~sfDestination] || ctx.tx[~sfExpiration]))
+        (ctx.tx[~sfAmount] || ctx.tx[~sfDestination] || ctx.tx[~sfExpiration]))
         return temDISABLED;
 
     if (auto const ret = preflight1(ctx); !isTesSuccess(ret))
@@ -91,7 +91,7 @@ NFTokenMint::preflight(PreflightContext const& ctx)
             return temMALFORMED;
     }
 
-    if (STAmount const amount = ctx.tx[sfAmount])
+    if (STAmount const amount = ctx.tx[~sfAmount])
     {
         if (amount.negative() && ctx.rules.enabled(fixNFTokenNegOffer))
             // An offer for a negative amount makes no sense.
@@ -173,7 +173,7 @@ NFTokenMint::preclaim(PreclaimContext const& ctx)
             return tecNO_PERMISSION;
     }
 
-    if (STAmount const amount = ctx.tx[sfAmount])
+    if (STAmount const amount = ctx.tx[~sfAmount])
     {
         if (hasExpired(ctx.view, ctx.tx[~sfExpiration]))
             return tecEXPIRED;
@@ -374,7 +374,7 @@ NFTokenMint::doApply()
             auto offer = std::make_shared<SLE>(offerID);
             (*offer)[sfOwner] = account_;
             (*offer)[sfNFTokenID] = nftokenID;
-            (*offer)[sfAmount] = ctx_.tx[sfAmount];
+            (*offer)[sfAmount] = ctx_.tx[~sfAmount];
             (*offer)[sfFlags] = sleFlags;
             (*offer)[sfOwnerNode] = *ownerNode;
             (*offer)[sfNFTokenOfferNode] = *offerNode;