diff --git a/init.sh b/init.sh
index 40f3463..55354bc 100755
--- a/init.sh
+++ b/init.sh
@@ -25,9 +25,9 @@ device=""
 # constant
 APP_NAME="Debian USB Creator"
 VERSION="1.99.0"
-SYSLINUX_EXE=$(which syslinux)
-PARTED_EXE=$(which parted)
-MCOPY=$(which mcopy)
+SYSLINUX_EXE=$(command -v syslinux)
+PARTED_EXE=$(command -v parted)
+MCOPY=$(command -v mtoos)
 SYSLINUX_FILES="menu.c32 vesamenu.c32 libutil.c32 libcom32.c32"
 SYSLINUX_BIOS_FILES=""
 SYSLINUX_EFI_FILES="ldlinux.e64"