@@ -23,16 +23,16 @@
 - (instancetype)of_init
 {
 	return [super init];
 }
 
-- init
+- (instancetype)init
 {
 	OF_INVALID_INIT_METHOD
 }
 
-- initWithSerialization: (OFXMLElement *)element
+- (instancetype)initWithSerialization: (OFXMLElement *)element
 {
 	OF_INVALID_INIT_METHOD
 }
 
 - (OFString *)stringValue
@@ -91,10 +91,10 @@
 - (OFXMLElement *)XMLElementBySerializing
 {
 	OF_UNRECOGNIZED_SELECTOR
 }
 
-- copy
+- (id)copy
 {
 	return [self retain];
 }
 @end