diff --git a/bin/qemush b/bin/qemush
index 8ba8b5e..4a41d7b 100755
--- a/bin/qemush
+++ b/bin/qemush
@@ -21,9 +21,7 @@ EDITOR="${EDITOR:-nvim}"
 export QEMUSH_NAME
 
 # Aliases
-alias ls='ls --color=auto'
-alias exec='exec '
-shopt -s expand_aliases
+ls='ls --color=auto'
 
 # Set a restrictive umask to make sure qemu user files are private
 umask 027
@@ -86,14 +84,16 @@ public_watch() {
 public_active() {
     cd || return
     echo "Running machines:"
-    exec ls -t sockets
+    set -- $ls -t sockets "$@"
+    exec "$@"
 }
 
 # List available virtual machines entrypoints
 public_ls() {
     cd || return
     echo "Available machines:"
-    exec ls launchers
+    set -- $ls launchers "$@"
+    exec "$@"
 }
 
 # Create a copy-on-write disk for a virtual machine
@@ -114,7 +114,8 @@ public_diskrm() {
 public_diskls() {
     cd || return
     echo "Available disks:"
-    exec ls disks
+    set -- $ls disks "$@"
+    exec "$@"
 }
 
 # Edit a virtual machine entrypoint with a text editor