diff --git a/dom/ipc/ContentChild.cpp b/dom/ipc/ContentChild.cpp
index 7be3aba227cc..65b019248914 100644
--- a/dom/ipc/ContentChild.cpp
+++ b/dom/ipc/ContentChild.cpp
@@ -1690,12 +1690,13 @@ ContentChild::RecvFileSystemUpdate(const nsString& aFsName,
                                    const int32_t& aMountGeneration,
                                    const bool& aIsMediaPresent,
                                    const bool& aIsSharing,
-                                   const bool& aIsFormatting)
+                                   const bool& aIsFormatting,
+                                   const bool& aIsFake)
 {
 #ifdef MOZ_WIDGET_GONK
     nsRefPtr<nsVolume> volume = new nsVolume(aFsName, aVolumeName, aState,
                                              aMountGeneration, aIsMediaPresent,
-                                             aIsSharing, aIsFormatting);
+                                             aIsSharing, aIsFormatting, aIsFake);
 
     nsRefPtr<nsVolumeService> vs = nsVolumeService::GetSingleton();
     if (vs) {
@@ -1710,6 +1711,7 @@ ContentChild::RecvFileSystemUpdate(const nsString& aFsName,
     unused << aIsMediaPresent;
     unused << aIsSharing;
     unused << aIsFormatting;
+    unused << aIsFake;
 #endif
     return true;
 }
diff --git a/dom/ipc/ContentChild.h b/dom/ipc/ContentChild.h
index f5d65b0739ef..12b3f533dd7f 100644
--- a/dom/ipc/ContentChild.h
+++ b/dom/ipc/ContentChild.h
@@ -256,7 +256,8 @@ public:
                                       const int32_t& aMountGeneration,
                                       const bool& aIsMediaPresent,
                                       const bool& aIsSharing,
-                                      const bool& aIsFormatting) MOZ_OVERRIDE;
+                                      const bool& aIsFormatting,
+                                      const bool& aIsFake) MOZ_OVERRIDE;
 
     virtual bool RecvNuwaFork() MOZ_OVERRIDE;
 
diff --git a/dom/ipc/ContentParent.cpp b/dom/ipc/ContentParent.cpp
index 7b037f488683..590570d6dbcd 100644
--- a/dom/ipc/ContentParent.cpp
+++ b/dom/ipc/ContentParent.cpp
@@ -2237,6 +2237,7 @@ ContentParent::Observe(nsISupports* aSubject,
         bool     isMediaPresent;
         bool     isSharing;
         bool     isFormatting;
+        bool     isFake;
 
         vol->GetName(volName);
         vol->GetMountPoint(mountPoint);
@@ -2245,10 +2246,11 @@ ContentParent::Observe(nsISupports* aSubject,
         vol->GetIsMediaPresent(&isMediaPresent);
         vol->GetIsSharing(&isSharing);
         vol->GetIsFormatting(&isFormatting);
+        vol->GetIsFake(&isFake);
 
         unused << SendFileSystemUpdate(volName, mountPoint, state,
                                        mountGeneration, isMediaPresent,
-                                       isSharing, isFormatting);
+                                       isSharing, isFormatting, isFake);
     } else if (!strcmp(aTopic, "phone-state-changed")) {
         nsString state(aData);
         unused << SendNotifyPhoneStateChange(state);
diff --git a/dom/ipc/PContent.ipdl b/dom/ipc/PContent.ipdl
index 6a7477a4eaa5..a330d76372bf 100644
--- a/dom/ipc/PContent.ipdl
+++ b/dom/ipc/PContent.ipdl
@@ -388,7 +388,7 @@ child:
 
     FileSystemUpdate(nsString fsName, nsString mountPoint, int32_t fsState,
                      int32_t mountGeneration, bool isMediaPresent,
-                     bool isSharing, bool isFormatting);
+                     bool isSharing, bool isFormatting, bool isFake);
 
     // Ask the Nuwa process to create a new child process.
     NuwaFork();
diff --git a/dom/system/gonk/nsVolume.h b/dom/system/gonk/nsVolume.h
index 3b078eae7cd0..e583f8f697aa 100644
--- a/dom/system/gonk/nsVolume.h
+++ b/dom/system/gonk/nsVolume.h
@@ -30,13 +30,13 @@ public:
   nsVolume(const nsAString& aName, const nsAString& aMountPoint,
            const int32_t& aState, const int32_t& aMountGeneration,
            const bool& aIsMediaPresent, const bool& aIsSharing,
-           const bool& aIsFormatting)
+           const bool& aIsFormatting, const bool& aIsFake)
     : mName(aName),
       mMountPoint(aMountPoint),
       mState(aState),
       mMountGeneration(aMountGeneration),
       mMountLocked(false),
-      mIsFake(false),
+      mIsFake(aIsFake),
       mIsMediaPresent(aIsMediaPresent),
       mIsSharing(aIsSharing),
       mIsFormatting(aIsFormatting)
@@ -82,7 +82,7 @@ public:
   typedef nsTArray<nsRefPtr<nsVolume> > Array;
 
 private:
-  ~nsVolume() {}
+  virtual ~nsVolume() {}  // MozExternalRefCountType complains if this is non-virtual
 
   friend class nsVolumeService; // Calls the following XxxMountLock functions
   void UpdateMountLock(const nsAString& aMountLockState);
diff --git a/dom/system/gonk/nsVolumeService.cpp b/dom/system/gonk/nsVolumeService.cpp
index 3ff86b842227..ef058cc388ba 100644
--- a/dom/system/gonk/nsVolumeService.cpp
+++ b/dom/system/gonk/nsVolumeService.cpp
@@ -249,7 +249,8 @@ nsVolumeService::CreateOrGetVolumeByPath(const nsAString& aPath, nsIVolume** aRe
                                          -1    /* generation */,
                                          true  /* isMediaPresent*/,
                                          false /* isSharing */,
-                                         false /* isFormatting */);
+                                         false /* isFormatting */,
+                                         true  /* isFake */);
   vol.forget(aResult);
   return NS_OK;
 }
@@ -382,8 +383,8 @@ nsVolumeService::CreateFakeVolume(const nsAString& name, const nsAString& path)
                                           -1    /* mountGeneration */,
                                           true  /* isMediaPresent */,
                                           false /* isSharing */,
-                                          false /* isFormatting */);
-    vol->SetIsFake(true);
+                                          false /* isFormatting */,
+                                          true  /* isFake */);
     vol->LogState();
     UpdateVolume(vol.get());
     return NS_OK;