@@ -27,11 +27,11 @@
 	return [[[self alloc] initWithCondition: condition] autorelease];
 }
 
 - (instancetype)init
 {
-	return [self initWithCondition: nil];
+	OF_INVALID_INIT_METHOD
 }
 
 - (instancetype)initWithCondition: (OFCondition *)condition
 {
 	self = [super init];