--- ./otp.bash~	2018-11-15 21:17:12.000000000 +0100
+++ ./otp.bash	2021-11-25 13:13:08.973741663 +0100
@@ -17,7 +17,7 @@
 # []
 
 VERSION="1.1.1"
-OATH=$(which oathtool)
+OATH=$(command -v oathtool)
 
 ## source:  https://gist.github.com/cdown/1163649
 urlencode() {