1 files changed, 1 insertions, 1 deletions
diff --git a/Swiften/Avatars/VCardAvatarManager.h b/Swiften/Avatars/VCardAvatarManager.h
index 9c6943e..a907fa5 100644
--- a/Swiften/Avatars/VCardAvatarManager.h
+++ b/Swiften/Avatars/VCardAvatarManager.h
@@ -14,19 +14,19 @@ namespace Swift {
 	class MUCRegistry;
 	class AvatarStorage;
 	class VCardManager;
 	class CryptoProvider;
 
 	class SWIFTEN_API VCardAvatarManager : public AvatarProvider {
 		public:
 			VCardAvatarManager(VCardManager*, AvatarStorage*, CryptoProvider* crypto, MUCRegistry* = NULL);
 
-			std::string getAvatarHash(const JID&) const;
+			boost::optional<std::string> getAvatarHash(const JID&) const;
 
 		private:
 			void handleVCardChanged(const JID& from);
 			JID getAvatarJID(const JID& o) const;
 
 		private:
 			VCardManager* vcardManager_;
 			AvatarStorage* avatarStorage_;
 			CryptoProvider* crypto_;