Index: src/OFString+Serialization.m
==================================================================
--- src/OFString+Serialization.m
+++ src/OFString+Serialization.m
@@ -19,10 +19,11 @@
 #import "OFString.h"
 #import "OFString+Serialization.h"
 #import "OFSerialization.h"
 #import "OFArray.h"
 #import "OFXMLElement.h"
+#import "OFXMLAttribute.h"
 #import "OFAutoreleasePool.h"
 
 #import "OFInvalidArgumentException.h"
 #import "OFMalformedXMLException.h"
 #import "OFUnboundNamespaceException.h"