1 files changed, 6 insertions, 0 deletions
diff --git a/django/utils/functional.py b/django/utils/functional.py
index 6d38f932f9..5c8a0c233f 100644
--- a/django/utils/functional.py
+++ b/django/utils/functional.py
@@ -176,6 +176,12 @@ def lazy(func, *resultclasses):
                 return str(self) % rhs
             return self.__cast() % rhs
 
+        def __add__(self, other):
+            return self.__cast() + other
+
+        def __radd__(self, other):
+            return other + self.__cast()
+
         def __deepcopy__(self, memo):
             # Instances of this class are effectively immutable. It's just a
             # collection of functions. So we don't need to do anything