@@ -1550,11 +1550,11 @@
 - (id)mutableCopy
 {
 	return [[OFMutableString alloc] initWithString: self];
 }
 
-- (of_comparison_result_t)compare: (id <OFComparing>)object
+- (of_comparison_result_t)compare: (id <OFObject, OFComparing>)object
 {
 	void *pool;
 	OFString *otherString;
 	const of_unichar_t *characters, *otherCharacters;
 	size_t minimumLength;