=== modified file 'zsh-functions/confz_fs_init'
--- zsh-functions/confz_fs_init	2017-11-20 14:56:55 +0000
+++ zsh-functions/confz_fs_init	2017-11-20 14:50:40 +0000
@@ -140,8 +140,7 @@
 	done
 
 	(( $#found )) || die "$0: found no matching devices"
-	(( $#found % 3 )) && die "$0: internal error parsing device information"
-	[[ $#found -ne 3 ]] && die "$0: found too many matching devices"
+	[[ $#found != 3 ]] || die "$0: found too many matching devices"
 	vars[device]=$found[0]
 	vars[device_model]=$found[1]
 	vars[serial_number]=$found[2]