From 8bbaa3fef0d4c986f051a0c1b2a41644691a8b01 Mon Sep 17 00:00:00 2001
From: Robert Malikowski <malikowskirobert@gmail.com>
Date: Fri, 11 Sep 2026 13:07:06 +0200
Subject: [PATCH] tiny review fixes

---
 .../pages/buy_sell/buy_sell_amount_page.dart      |  1 +
 lib/view_model/buy/buy_sell_view_model.dart       | 15 +++++++++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/lib/new-ui/pages/buy_sell/buy_sell_amount_page.dart b/lib/new-ui/pages/buy_sell/buy_sell_amount_page.dart
index c7031c8d6..951e24674 100644
--- a/lib/new-ui/pages/buy_sell/buy_sell_amount_page.dart
+++ b/lib/new-ui/pages/buy_sell/buy_sell_amount_page.dart
@@ -290,6 +290,7 @@ class BuySellCustomAmountInput extends StatelessWidget {
             Padding(
               padding: const EdgeInsets.all(18),
               child: NewPrimaryButton(
+                disabled: controller.text.isEmpty,
                 onPressed: onContinuePressed,
                 isLoading: isLoading,
                 text: S.of(context).continue_text,
diff --git a/lib/view_model/buy/buy_sell_view_model.dart b/lib/view_model/buy/buy_sell_view_model.dart
index 048e61628..e936ca4ba 100644
--- a/lib/view_model/buy/buy_sell_view_model.dart
+++ b/lib/view_model/buy/buy_sell_view_model.dart
@@ -96,10 +96,21 @@ abstract class BuySellViewModelBase extends WalletChangeListenerViewModel with S
 
   // sets based on the absolute amout (from the fiat/charts api)
   // works even if you have no rates
-  Future<void> setCryptoAmountFromFiat(String fiatAmount) async => changeCryptoAmount(
-        amount: (double.parse(fiatAmount) / (fiatConversionStore.prices[cryptoCurrency] ?? 0))
+  Future<void> setCryptoAmountFromFiat(String fiatAmount) async {
+    if(fiatAmount.isEmpty) {
+      await changeCryptoAmount(amount: "");
+      return;
+    }
+
+    if(fiatConversionStore.prices[cryptoCurrency] == null) {
+      return;
+    }
+
+    await changeCryptoAmount(
+        amount: (double.parse(fiatAmount) / (fiatConversionStore.prices[cryptoCurrency]!))
             .toString(),
       );
+  }
 
   final AppStore _appStore;