diff --git a/website/docs/r/autoscaling_policy.html.markdown b/website/docs/r/autoscaling_policy.html.markdown
index aa913b2d608c..70093435fdfe 100644
--- a/website/docs/r/autoscaling_policy.html.markdown
+++ b/website/docs/r/autoscaling_policy.html.markdown
@@ -49,6 +49,10 @@ The following arguments are supported:
 * `policy_type` - (Optional) The policy type, either "SimpleScaling", "StepScaling" or "TargetTrackingScaling". If this value isn't provided, AWS will default to "SimpleScaling."
 * `estimated_instance_warmup` - (Optional) The estimated time, in seconds, until a newly launched instance will contribute CloudWatch metrics. Without a value, AWS will default to the group's specified cooldown period.
 
+The following argument is only available to "SimpleScaling" and "StepScaling" type policies:
+
+* `min_adjustment_magnitude` - (Optional) Minimum value to scale by when `adjustment_type` is set to `PercentChangeInCapacity`.
+
 The following arguments are only available to "SimpleScaling" type policies:
 
 * `cooldown` - (Optional) The amount of time, in seconds, after a scaling activity completes and before the next scaling activity can start.