diff --git a/service/fsmanager.lua b/service/fsmanager.lua
index fc2696b..11b07fe 100644
--- a/service/fsmanager.lua
+++ b/service/fsmanager.lua
@@ -3,6 +3,11 @@ fsmanager.filesystems = {}
 local run = true
 
 function fsmanager.mount(addr)
+ for k,v in ipairs(fs.mounts()) do
+  if fs.address(v) == addr then
+   return
+  end
+ end
  dest = "/" .. (component.invoke(addr,"getLabel") or "mnt/"..addr:sub(1,3))
  syslog("Mounting "..addr.." to "..dest)
  fs.makeDirectory(dest)