@@ -21,23 +21,23 @@
 #import "OFHash.h"
 
 #import "OFNotImplementedException.h"
 
 @implementation OFHashAlreadyCalculatedException
-+ newWithClass: (Class)class_
-	  hash: (OFHash*)hash
++ exceptionWithClass: (Class)class_
+		hash: (OFHash*)hash
 {
-	return [[self alloc] initWithClass: class_
-				      hash: hash];
+	return [[[self alloc] initWithClass: class_
+				       hash: hash] autorelease];
 }
 
 - initWithClass: (Class)class_
 {
 	Class c = isa;
 	[self release];
-	@throw [OFNotImplementedException newWithClass: c
-					      selector: _cmd];
+	@throw [OFNotImplementedException exceptionWithClass: c
+						    selector: _cmd];
 }
 
 - initWithClass: (Class)class_
 	   hash: (OFHash*)hash
 {