diff --git a/custom/apps/mining-checker/src/Domain/OcrService.php b/custom/apps/mining-checker/src/Domain/OcrService.php
index b0a168dd..df586675 100644
--- a/custom/apps/mining-checker/src/Domain/OcrService.php
+++ b/custom/apps/mining-checker/src/Domain/OcrService.php
@@ -512,7 +512,7 @@ final class OcrService
             }
             $amount = round((float) str_replace(',', '.', $match[1]), 10);
             $currency = strtoupper((string) $match[2]);
-            if ($amount <= 0 || $currency === '' || in_array($currency, ['USD', 'EUR'], true)) {
+            if ($amount < 0 || $currency === '' || in_array($currency, ['USD', 'EUR'], true)) {
                 continue;
             }
 
@@ -555,18 +555,23 @@ final class OcrService
             ];
         }
 
-        if ($walletCurrencyHint !== '' && array_key_exists($walletCurrencyHint, $balances)) {
+        if (
+            $walletCurrencyHint !== ''
+            && array_key_exists($walletCurrencyHint, $balances)
+            && (float) (is_array($balances[$walletCurrencyHint]) ? ($balances[$walletCurrencyHint]['balance'] ?? 0.0) : $balances[$walletCurrencyHint]) > 0
+        ) {
             $walletCurrency = $walletCurrencyHint;
             $walletBalance = is_array($balances[$walletCurrencyHint])
                 ? (float) ($balances[$walletCurrencyHint]['balance'] ?? 0.0)
                 : (float) $balances[$walletCurrencyHint];
         } elseif ($balances !== []) {
             foreach (['DOGE', 'BTC', 'ETH', 'CTC', 'HSH', 'LTC', 'USDT', 'USDC'] as $preferredCurrency) {
-                if (array_key_exists($preferredCurrency, $balances)) {
+                $preferredBalance = array_key_exists($preferredCurrency, $balances)
+                    ? (is_array($balances[$preferredCurrency]) ? (float) ($balances[$preferredCurrency]['balance'] ?? 0.0) : (float) $balances[$preferredCurrency])
+                    : 0.0;
+                if ($preferredBalance > 0) {
                     $walletCurrency = $preferredCurrency;
-                    $walletBalance = is_array($balances[$preferredCurrency])
-                        ? (float) ($balances[$preferredCurrency]['balance'] ?? 0.0)
-                        : (float) $balances[$preferredCurrency];
+                    $walletBalance = $preferredBalance;
                     break;
                 }
             }