diff --git a/apps/amm/qml/components/swap/SwapCard.qml b/apps/amm/qml/components/swap/SwapCard.qml
index 933e5e7..1b19f1e 100644
--- a/apps/amm/qml/components/swap/SwapCard.qml
+++ b/apps/amm/qml/components/swap/SwapCard.qml
@@ -86,7 +86,7 @@ Rectangle {
     readonly property bool tokensSelected: sellToken !== null && buyToken !== null
     readonly property bool sameTokenSelected: isSameToken(sellToken, buyToken)
     readonly property bool insufficientBalance: hasAmount && sellToken !== null && sellBalanceRequirement > (sellToken.balance || 0)
-    readonly property bool insufficientLiquidity: hasAmount && buyToken !== null && parsedBuyAmount > (buyToken.reserve || 0)
+    readonly property bool insufficientLiquidity: hasAmount && buyToken !== null && parsedBuyAmount >= (buyToken.reserve || 0)
     readonly property bool canSubmit: tokensSelected && !sameTokenSelected && hasAmount && parsedSellAmount > 0 && parsedBuyAmount > 0 && !insufficientBalance && !insufficientLiquidity
 
     readonly property string submitButtonText: {
diff --git a/apps/amm/tests/qml/tst_SwapPage.qml b/apps/amm/tests/qml/tst_SwapPage.qml
index d0e9a10..7602f62 100644
--- a/apps/amm/tests/qml/tst_SwapPage.qml
+++ b/apps/amm/tests/qml/tst_SwapPage.qml
@@ -127,6 +127,23 @@ Item {
             compare(card.submitButtonText, "Insufficient balance")
         }
 
+        function test_exactOutputCannotConsumeEntireReserve() {
+            const page = createTemporaryObject(pageComponent, root)
+            verify(page)
+
+            const card = findChild(page, "swapCard")
+            verify(card)
+            card.setToken("sell", page.tokens[0])
+            card.setToken("buy", page.tokens[1])
+            card.buyInput = String(card.buyToken.reserve)
+            card.editingSide = "buy"
+
+            compare(card.parsedBuyAmount, card.buyToken.reserve)
+            verify(card.insufficientLiquidity)
+            verify(!card.canSubmit)
+            compare(card.submitButtonText, "Insufficient liquidity")
+        }
+
         function test_reselectingOppositeTokenSwapsPair() {
             const page = createTemporaryObject(pageComponent, root)
             verify(page)