diff --git a/public/viewjs/components/productamountpicker.js b/public/viewjs/components/productamountpicker.js
index 5884b357..8fb4f372 100644
--- a/public/viewjs/components/productamountpicker.js
+++ b/public/viewjs/components/productamountpicker.js
@@ -17,7 +17,10 @@ Grocy.Components.ProductAmountPicker.Reload = function(productId, destinationQuI
 				factor = 1;
 			}
 
-			$("#qu_id").append('<option value="' + conversion.to_qu_id + '" data-qu-factor="' + factor + '">' + conversion.to_qu_name + '</option>');
+			if (!$('#qu_id option[value="' + conversion.to_qu_id + '"]').length) // Don't add the destination QU multiple times
+			{
+				$("#qu_id").append('<option value="' + conversion.to_qu_id + '" data-qu-factor="' + factor + '">' + conversion.to_qu_name + '</option>');
+			}
 		});
 	}