diff --git a/app/Validation/TransactionValidation.php b/app/Validation/TransactionValidation.php
index 5b5a01a525..c6e4d09496 100644
--- a/app/Validation/TransactionValidation.php
+++ b/app/Validation/TransactionValidation.php
@@ -233,16 +233,16 @@ trait TransactionValidation
 
             return;
         }
-        Log::debug(sprintf('Source account expects %s', $sourceCurrency->code));
-        Log::debug(sprintf('Destination account expects %s', $destinationCurrency->code));
+        Log::debug(sprintf('Source account expects #%d: %s', $sourceCurrency->id, $sourceCurrency->code));
+        Log::debug(sprintf('Destination account expects #%d: %s', $destinationCurrency->id,  $destinationCurrency->code));
 
         Log::debug(sprintf('Amount is %s', $transaction['amount']));
 
         if (TransactionTypeEnum::DEPOSIT->value === ucfirst($transactionType)) {
             Log::debug(sprintf('Processing as a "%s"', $transactionType));
             // use case: deposit from liability account to an asset account
-            // the foreign amount must be in the currency of the source
-            // the amount must be in the currency of the destination
+            // the amount must be in the currency of the SOURCE
+            // the foreign amount must be in the currency of the DESTINATION
 
             // no foreign currency information is present:
             if (!$this->hasForeignCurrencyInfo($transaction)) {
@@ -255,7 +255,7 @@ trait TransactionValidation
             $foreignCurrencyCode = $transaction['foreign_currency_code'] ?? false;
             $foreignCurrencyId   = (int) ($transaction['foreign_currency_id'] ?? 0);
             Log::debug(sprintf('Foreign currency code seems to be #%d "%s"', $foreignCurrencyId, $foreignCurrencyCode), $transaction);
-            if ($foreignCurrencyCode !== $sourceCurrency->code && $foreignCurrencyId !== $sourceCurrency->id) {
+            if ($foreignCurrencyCode !== $destinationCurrency->code && $foreignCurrencyId !== $destinationCurrency->id) {
                 $validator->errors()->add(sprintf('transactions.%d.foreign_currency_code', $index), (string) trans('validation.require_foreign_src'));
 
                 return;