diff --git a/mtda/sdmux/helpers/image.py b/mtda/sdmux/helpers/image.py
index 411120e1..d8a625db 100644
--- a/mtda/sdmux/helpers/image.py
+++ b/mtda/sdmux/helpers/image.py
@@ -20,7 +20,6 @@ def __init__(self, mtda):
         self.isfuse = False
         self.isloop = False
         self.lock = threading.Lock()
-        atexit.register(self._umount)
 
     def _close(self):
         self.mtda.debug(3, "sdmux.helpers.image._close()")