diff --git a/model/ObbVolume.h b/model/ObbVolume.h
index 8f7ee94..bfcd3d2 100644
--- a/model/ObbVolume.h
+++ b/model/ObbVolume.h
@@ -29,7 +29,7 @@
  */
 class ObbVolume : public VolumeBase {
   public:
-    ObbVolume(int id, const std::string& sourcePath, const std::string& sourceKey, gid_t ownerGid);
+    ObbVolume(int id, const std::string& sourcePath, gid_t ownerGid);
     virtual ~ObbVolume();
 
   protected:
@@ -40,12 +40,9 @@
 
   private:
     std::string mSourcePath;
-    std::string mSourceKey;
     gid_t mOwnerGid;
 
     std::string mLoopPath;
-    std::string mDmPath;
-    std::string mMountPath;
 
     DISALLOW_COPY_AND_ASSIGN(ObbVolume);
 };