diff --git a/dmount b/dmount
index 7ba7011..db56bd6 100755
--- a/dmount
+++ b/dmount
@@ -1,7 +1,7 @@
 #!/usr/bin/bash
 
 
-Version="1.1.0"
+Version="1.1.1"
 Usage="dmount PARAMETER
 
 Script which permit to mount/unmount an LVM on LUKS using dmcrypt, doas and fstab.
@@ -36,10 +36,10 @@ mount_lvm_on_luks() {
 
 umount_devices() {
     echo "umount devices"
-    doas umount -R $Mountpoint_cours
-    doas umount -R $Mountpoint_doc
-    doas umount -R $Mountpoint_virt_machine
-    doas umount -R $Mountpoint_data
+    doas umount -R $Mountpoint_cours || lsof +D $Mountpoint_cours
+    doas umount -R $Mountpoint_doc || lsof +D $Mountpoint_doc
+    doas umount -R $Mountpoint_virt_machine || lsof +D $Mountpoint_virt_machine
+    doas umount -R $Mountpoint_data || lsof +D $Mountpoint_data
 }
 
 error_umount() {