diff --git a/config/example-polar.cfg b/config/example-polar.cfg
index 3c68c8dd..efb7f19f 100644
--- a/config/example-polar.cfg
+++ b/config/example-polar.cfg
@@ -14,11 +14,11 @@
 step_pin: ar54
 dir_pin: ar55
 enable_pin: !ar38
-step_distance: 0.000981748
+step_distance: 0.001963495
 #   On a polar printer the step_distance is the amount each step pulse
 #   moves the bed in radians (for example, a 1.8 degree stepper with
-#   16 micro-steps would be 1.8 / 360 * pi / 16 == 0.000981748). This
-#   parameter must be provided.
+#   16 micro-steps would be 2 * pi * (1.8 / 360) / 16 == 0.001963495).
+#   This parameter must be provided.
 
 # The stepper_arm section is used to describe the stepper controlling
 # the carriage on the arm.