diff --git a/builtin/providers/aws/resource_aws_autoscaling_schedule.go b/builtin/providers/aws/resource_aws_autoscaling_schedule.go
index b58f46599..200b0ee37 100644
--- a/builtin/providers/aws/resource_aws_autoscaling_schedule.go
+++ b/builtin/providers/aws/resource_aws_autoscaling_schedule.go
@@ -97,17 +97,9 @@ func resourceAwsAutoscalingScheduleCreate(d *schema.ResourceData, meta interface
 		params.Recurrence = aws.String(attr.(string))
 	}
 
-	if attr, ok := d.GetOk("min_size"); ok {
-		params.MinSize = aws.Int64(int64(attr.(int)))
-	}
-
-	if attr, ok := d.GetOk("max_size"); ok {
-		params.MaxSize = aws.Int64(int64(attr.(int)))
-	}
-
-	if attr, ok := d.GetOk("desired_capacity"); ok {
-		params.DesiredCapacity = aws.Int64(int64(attr.(int)))
-	}
+	params.MinSize = aws.Int64(int64(d.Get("min_size").(int)))
+	params.MaxSize = aws.Int64(int64(d.Get("max_size").(int)))
+	params.DesiredCapacity = aws.Int64(int64(d.Get("desired_capacity").(int)))
 
 	log.Printf("[INFO] Creating Autoscaling Scheduled Action: %s", d.Get("scheduled_action_name").(string))
 	_, err := autoscalingconn.PutScheduledUpdateGroupAction(params)
diff --git a/builtin/providers/aws/resource_aws_autoscaling_schedule_test.go b/builtin/providers/aws/resource_aws_autoscaling_schedule_test.go
index 5bdc89af1..c332e1400 100644
--- a/builtin/providers/aws/resource_aws_autoscaling_schedule_test.go
+++ b/builtin/providers/aws/resource_aws_autoscaling_schedule_test.go
@@ -47,6 +47,24 @@ func TestAccAWSAutoscalingSchedule_recurrence(t *testing.T) {
 	})
 }
 
+func TestAccAWSAutoscalingSchedule_zeroValues(t *testing.T) {
+	var schedule autoscaling.ScheduledUpdateGroupAction
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSAutoscalingScheduleDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccAWSAutoscalingScheduleConfig_zeroValues,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckScalingScheduleExists("aws_autoscaling_schedule.foobar", &schedule),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckScalingScheduleExists(n string, policy *autoscaling.ScheduledUpdateGroupAction) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		rs, ok := s.RootModule().Resources[n]
@@ -168,3 +186,38 @@ resource "aws_autoscaling_schedule" "foobar" {
     autoscaling_group_name = "${aws_autoscaling_group.foobar.name}"
 }
 `)
+
+var testAccAWSAutoscalingScheduleConfig_zeroValues = fmt.Sprintf(`
+resource "aws_launch_configuration" "foobar" {
+    name = "terraform-test-foobar5"
+    image_id = "ami-21f78e11"
+    instance_type = "t1.micro"
+}
+
+resource "aws_autoscaling_group" "foobar" {
+    availability_zones = ["us-west-2a"]
+    name = "terraform-test-foobar5"
+    max_size = 1
+    min_size = 1
+    health_check_grace_period = 300
+    health_check_type = "ELB"
+    force_delete = true
+    termination_policies = ["OldestInstance"]
+    launch_configuration = "${aws_launch_configuration.foobar.name}"
+    tag {
+        key = "Foo"
+        value = "foo-bar"
+        propagate_at_launch = true
+    }
+}
+
+resource "aws_autoscaling_schedule" "foobar" {
+    scheduled_action_name = "foobar"
+    max_size = 0
+    min_size = 0
+    desired_capacity = 0
+    start_time = "2018-01-16T07:00:00Z"
+    end_time = "2018-01-16T13:00:00Z"
+    autoscaling_group_name = "${aws_autoscaling_group.foobar.name}"
+}
+`)
diff --git a/website/source/docs/providers/aws/r/autoscaling_schedule.html.markdown b/website/source/docs/providers/aws/r/autoscaling_schedule.html.markdown
index 4ad947293..de8c24ce6 100644
--- a/website/source/docs/providers/aws/r/autoscaling_schedule.html.markdown
+++ b/website/source/docs/providers/aws/r/autoscaling_schedule.html.markdown
@@ -45,11 +45,13 @@ The following arguments are supported:
 * `end_time` - (Optional) The time for this action to end, in "YYYY-MM-DDThh:mm:ssZ" format in UTC/GMT only (for example, 2014-06-01T00:00:00Z ).
                           If you try to schedule your action in the past, Auto Scaling returns an error messag
 * `recurrence` - (Optional) The time when recurring future actions will start. Start time is specified by the user following the Unix cron syntax format. 
-* `min_size` - (Optional) The minimum size for the Auto Scaling group.
-* `max_size` - (Optional) The maximum size for the Auto Scaling group.
-* `desired_capacity` - (Optional) The number of EC2 instances that should be running in the group.
+* `min_size` - (Optional) The minimum size for the Auto Scaling group. Default
+0.
+* `max_size` - (Optional) The maximum size for the Auto Scaling group. Default
+0.
+* `desired_capacity` - (Optional) The number of EC2 instances that should be running in the group. Default 0.
 
 ~> **NOTE:** When `start_time` and `end_time` are specified with `recurrence` , they form the boundaries of when the recurring action will start and stop.
 
 ## Attribute Reference
-* `arn` - The ARN assigned by AWS to the autoscaling schedule.
\ No newline at end of file
+* `arn` - The ARN assigned by AWS to the autoscaling schedule.