@@ -457,11 +457,12 @@
 
 	if (--depthLimit == 0)
 		return nil;
 
 	while (**pointer != '}') {
-		id key, object;
+		OFString *key;
+		id object;
 
 		skipWhitespacesAndComments(pointer, stop, line);
 		if (*pointer >= stop)
 			return nil;
 
@@ -487,11 +488,11 @@
 		    **pointer == '_' || **pointer == '$' || **pointer == '\\')
 			key = parseIdentifier(pointer, stop);
 		else
 			key = nextObject(pointer, stop, line, depthLimit);
 
-		if (key == nil)
+		if (![key isKindOfClass: [OFString class]])
 			return nil;
 
 		skipWhitespacesAndComments(pointer, stop, line);
 		if (*pointer + 1 >= stop || **pointer != ':')
 			return nil;