diff --git a/bin/CryptoBoxRootActions b/bin/CryptoBoxRootActions
index a59b464..3f2e534 100755
--- a/bin/CryptoBoxRootActions
+++ b/bin/CryptoBoxRootActions
@@ -247,8 +247,10 @@ def run_cryptsetup(args):
 		elif action == "luksDelKey":
 			if len(args) < 2: raise "WrongArguments", "missing arguments"
 			device = args[0]; del args[0]
-			cmd_args.insert(-1, action)
-			cmd_args.insert(-1, device)
+			slot = args[0]; del args[0]
+			cmd_args.append(action)
+			cmd_args.append(device)
+			cmd_args.append(slot)
 		elif action == "isLuks":
 			device = args[0]; del args[0]
 			cmd_args.append(action)
diff --git a/src/cryptobox/core/container.py b/src/cryptobox/core/container.py
index 04a4dc6..9338854 100644
--- a/src/cryptobox/core/container.py
+++ b/src/cryptobox/core/container.py
@@ -309,10 +309,10 @@ class CryptoBoxContainer:
                 self.cbox.prefs["Programs"]["super"],
                 self.cbox.prefs["Programs"]["CryptoBoxRootActions"],
                 "program", "cryptsetup",
-                "--batch-mode",
                 "luksDelKey",
                 self.get_device(),
-                "%d" % (keyslot, )])
+                "%d" % (keyslot, ),
+                "--batch-mode"])
         proc.wait()
         if proc.returncode != 0:
             error_msg = "Could not remove the old luks key: %s" % (proc.stderr.read().strip(), )