diff --git a/README.md b/README.md
index 2515592..49d32ca 100644
--- a/README.md
+++ b/README.md
@@ -291,7 +291,7 @@ So ALL my motors are 4-wire bipolar-series motors!
  Fact:  Z motors and AB motors are LD0-42STH40-2004MAH
 		Rated Peak current: 2.0A / Phase
 
- Rule of Thumb (https://robotics.stackexchange.com/questions/14071/how-to-calculate-my-power-supply-voltage-and-current):
+ Rule of Thumb (https://robotics.stackexchange.com/a/16333/31219):
 
  1. Power_supply_current = number_of_motors * 1/3 * motor_peak_current for "bipolar-series motors" (All LDO motors are bipolar-Series Motors!)