diff --git a/services/StockService.php b/services/StockService.php
index 9d54d4b0..5c660fdf 100644
--- a/services/StockService.php
+++ b/services/StockService.php
@@ -249,6 +249,11 @@ class StockService extends BaseService
 				$potentialStockEntries = $this->GetProductStockEntriesForLocation($productId, $locationId, false, $allowSubproductSubstitution);
 			}
 
+			if ($specificStockEntryId !== 'default')
+			{
+				$potentialStockEntries = FindAllObjectsInArrayByPropertyValue($potentialStockEntries, 'stock_id', $specificStockEntryId);
+			}
+
 			$productStockAmount = SumArrayValue($potentialStockEntries, 'amount');
 
 			if ($amount > $productStockAmount)
@@ -256,11 +261,6 @@ class StockService extends BaseService
 				throw new \Exception('Amount to be consumed cannot be > current stock amount (if supplied, at the desired location)');
 			}
 
-			if ($specificStockEntryId !== 'default')
-			{
-				$potentialStockEntries = FindAllObjectsInArrayByPropertyValue($potentialStockEntries, 'stock_id', $specificStockEntryId);
-			}
-
 			if ($transactionId === null)
 			{
 				$transactionId = uniqid();