1 files changed, 4 insertions, 1 deletions
diff --git a/argparse.c b/argparse.c
index 124f3bc..1eae42b 100644
--- a/argparse.c
+++ b/argparse.c
@@ -20,7 +20,10 @@ void printhelp()
   "               Default: %ld\n"
   "-g <governor>  cpufreq governor to use, use \"keep\" to keep current governor\n"
   "               Default: %s\n"
-  "-i <file>      Input for temperature readout, usually somewhere in sysfs\n"
+  "-i <sensor>    Input for temperature readout, this can be specified as:\n"
+  "               A full path that starts with /, usually somewhere in sysfs\n"
+  "               A sensor name, for example \"Core 0\"\n"
+  "               The word \"auto\" autodetects a valid sensor\n"
   "               Default: %s\n"
   "-p <time>      Poll interval in seconds\n"
   "               Default: %d\n"