diff --git a/django/core/serializers/__init__.py b/django/core/serializers/__init__.py
index 32f135009c..bed1fa20dc 100644
--- a/django/core/serializers/__init__.py
+++ b/django/core/serializers/__init__.py
@@ -36,7 +36,7 @@ except ImportError:
 _serializers = {}
 
 def register_serializer(format, serializer_module, serializers=None):
-    """"Register a new serializer.
+    """Register a new serializer.
 
     ``serializer_module`` should be the fully qualified module name
     for the serializer.