diff --git a/src/Microsoft.AspNet.Http/RequestCookieCollection.cs b/src/Microsoft.AspNet.Http/RequestCookieCollection.cs
index 363b69df..4337ce44 100644
--- a/src/Microsoft.AspNet.Http/RequestCookieCollection.cs
+++ b/src/Microsoft.AspNet.Http/RequestCookieCollection.cs
@@ -48,7 +48,7 @@ public string this[string key]
 
                 if (Store == null)
                 {
-                    return string.Empty;
+                    return null;
                 }
 
                 string value;
@@ -56,7 +56,7 @@ public string this[string key]
                 {
                     return value;
                 }
-                return string.Empty;
+                return null;
             }
         }
         
@@ -232,4 +232,4 @@ public void Reset()
             }
         }
     }
-}
\ No newline at end of file
+}