diff --git a/wipri b/wipri
index ad0d750..50cfdec 100644
--- a/wipri
+++ b/wipri
@@ -153,7 +153,7 @@ echo ""
 checktime=".5"				# seconds between mac addr checks: lower = more frequent checks
 hightime="600"				# Make this number higher if you want randomization times longer
 lowtime="300"				# Make this number lower to lower min time randomized
-rando=$((RANDOM%$hightime+$lowtime))	# Create Random time
+rando=$((RANDOM%(${hightime}-${lowtime}+1)+$lowtime))	# Random Time Generation 
 killbt=$(rfkill bluetooth)		# use rfkill to block bluetooth (must use to re-enable if wanted)
 kernmit="on"				# Turn on to mitigate kernel (warning: passes changes to kernel) - it's optional
 oui_file='/etc/wipri/final.OUI'		# Valid OUI list required for verifiable MAC addresses