@@ -1068,11 +1068,11 @@
 				       withString: @"\\r"];
 	[serialization replaceOccurrencesOfString: @"\t"
 				       withString: @"\\t"];
 
 	if ([self isKindOfClass: [OFMutableString class]])
-		[serialization prependString: @"<mutable>\""];
+		[serialization prependString: @"(mutable)\""];
 	else
 		[serialization prependString: @"\""];
 	[serialization appendString: @"\""];
 
 	/*