@@ -189,28 +189,11 @@
 
 	return false;
 }
 
 @implementation OFIRIAllowedCharacterSetBase
-- (instancetype)autorelease
-{
-	return self;
-}
-
-- (instancetype)retain
-{
-	return self;
-}
-
-- (void)release
-{
-}
-
-- (unsigned int)retainCount
-{
-	return OFMaxRetainCount;
-}
+OF_SINGLETON_METHODS
 @end
 
 @implementation OFIRIAllowedCharacterSet
 - (bool)characterIsMember: (OFUnichar)character
 {