diff --git a/calibrate.py b/calibrate.py
index 3348871..8c51613 100644
--- a/calibrate.py
+++ b/calibrate.py
@@ -77,7 +77,7 @@ def main():
 
     time = [0 for _ in range(4)]
 
-    cpc = 3.14159*15*144 # wheel counts per cm
+    cpc = 144/(3.14159*15) # wheel counts per cm
 
     # milliseconds per 10cm forward
     time[0] = int((1000 * 10 * cpc)/cps[0])