diff -Naur a/unetbootin.sh b/unetbootin.sh
--- a/unetbootin.sh
+++ b/unetbootin.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 export QT_X11_NO_MITSHM=1
-if [ $(which pkexec) ]; then
+if [ $(id -u) -ne 0 -a $(which pkexec) ]; then
   pkexec --disable-internal-agent "/usr/bin/unetbootin.elf" "$@" 2>/tmp/_polkit_error
   if [ -s /tmp/_polkit_error ]; then
     zenity --error --text="`cat /tmp/_polkit_error`"