diff --git a/VolumeManager.h b/VolumeManager.h
index 2072ca7..f526990 100644
--- a/VolumeManager.h
+++ b/VolumeManager.h
@@ -93,6 +93,7 @@
     int unmountAsec(const char *id, bool force);
     int renameAsec(const char *id1, const char *id2);
     int getAsecMountPath(const char *id, char *buffer, int maxlen);
+    int getAsecFilesystemPath(const char *id, char *buffer, int maxlen);
 
     /* Loopback images */
     int listMountedObbs(SocketClient* cli);