diff --git a/raspberry_pi_IR_take_pic.sh b/raspberry_pi_IR_take_pic.sh
index 6ee76d0..bd3a414 100755
--- a/raspberry_pi_IR_take_pic.sh
+++ b/raspberry_pi_IR_take_pic.sh
@@ -1,7 +1,8 @@
 
 # take a picture.
 # First turn on IR LEDS
-# GPIO17 is tyhe ground side of the IR leds, so setting it to 0 turns them on
+# GPIO17 is the ground side of the IR leds, so setting it to 0 turns them on
+# Note this is through a 220 Ohm resdistor limiting the current to about 10 mA
 if [ -d /sys/class/gpio/gpio17  ]; then
 echo " gpio17 already exists "
 else