diff --git a/pmb/flasher/frontend.py b/pmb/flasher/frontend.py
index a47191e6..813c4bd4 100644
--- a/pmb/flasher/frontend.py
+++ b/pmb/flasher/frontend.py
@@ -148,10 +148,6 @@ def frontend(args):
     action = args.action_flasher
     method = args.flash_method or args.deviceinfo["flash_method"]
 
-    # Legacy alias
-    if action == "flash_system":
-        action = "flash_rootfs"
-
     if method == "none" and action in ["boot", "flash_kernel", "flash_rootfs",
                                        "flash_lk2nd"]:
         logging.info("This device doesn't support any flash method.")
diff --git a/pmb/parse/arguments.py b/pmb/parse/arguments.py
index b5c15bad..c584afb8 100644
--- a/pmb/parse/arguments.py
+++ b/pmb/parse/arguments.py
@@ -250,7 +250,7 @@ def arguments_flasher(subparser):
                              " default boot image partition ")
 
     # Flash rootfs
-    flash_rootfs = sub.add_parser("flash_rootfs", aliases=["flash_system"],
+    flash_rootfs = sub.add_parser("flash_rootfs",
                                   help="flash the rootfs to a partition on the"
                                   " device (partition layout does not get"
                                   " changed)")