diff --git a/django/core/cache/backends/dummy.py b/django/core/cache/backends/dummy.py
index c68f33616c..4c64161538 100644
--- a/django/core/cache/backends/dummy.py
+++ b/django/core/cache/backends/dummy.py
@@ -6,8 +6,8 @@ class CacheClass(BaseCache):
     def __init__(self, *args, **kwargs):
         pass
 
-    def get(self, *args, **kwargs):
-        pass
+    def get(self, key, default=None):
+        return default
 
     def set(self, *args, **kwargs):
         pass
@@ -16,7 +16,7 @@ class CacheClass(BaseCache):
         pass
 
     def get_many(self, *args, **kwargs):
-        pass
+        return {}
 
     def has_key(self, *args, **kwargs):
         return False