diff --git a/ingredients/__init__.py b/ingredients/__init__.py
index 5c85cb2..0d4799d 100644
--- a/ingredients/__init__.py
+++ b/ingredients/__init__.py
@@ -39,7 +39,7 @@ def parse_ingredient_from_nlp(ingredient_string: str) -> Ingredient:
             quantity = amount.quantity
 
         if unit is None and amount.unit:
-            real_unit = units.get_unit(amount.unit)
+            real_unit = units.get_unit(str(amount.unit))
             if real_unit:
                 unit = real_unit.name