@@ -22,17 +22,27 @@
 
 #import "SL3Exception.h"
 
 @implementation SL3Exception
 @synthesize connection = _connection, errorCode = _errorCode;
+
++ (instancetype)exception
+{
+	OF_UNRECOGNIZED_SELECTOR
+}
 
 + (instancetype)exceptionWithConnection: (SL3Connection *)connection
 			      errorCode: (int)errorCode
 {
 	return [[[self alloc] initWithConnection: connection
 				       errorCode: errorCode] autorelease];
 }
+
+- (instancetype)init
+{
+	OF_INVALID_INIT_METHOD
+}
 
 - (instancetype)initWithConnection: (SL3Connection *)connection
 			 errorCode: (int)errorCode
 {
 	self = [super init];