@@ -61,11 +61,11 @@
 
 	if (!of_tlskey_new(&thread_self))
 		@throw [OFInitializationFailedException newWithClass: self];
 }
 
-+ threadWithObject: (OFObject <OFCopying>*)obj
++ threadWithObject: (id)obj
 {
 	return [[[self alloc] initWithObject: obj] autorelease];
 }
 
 + setObject: (OFObject*)obj
@@ -139,11 +139,11 @@
 {
 	@throw [OFNotImplementedException newWithClass: isa
 					      selector: _cmd];
 }
 
-- initWithObject: (OFObject <OFCopying>*)obj
+- initWithObject: (id)obj
 {
 	self = [super init];
 
 	object = [obj retain];