diff --git a/builtin/providers/aws/resource_aws_route_table_test.go b/builtin/providers/aws/resource_aws_route_table_test.go
index d18308c8f..6175313da 100644
--- a/builtin/providers/aws/resource_aws_route_table_test.go
+++ b/builtin/providers/aws/resource_aws_route_table_test.go
@@ -9,7 +9,7 @@ import (
 	"github.com/mitchellh/goamz/ec2"
 )
 
-func TestAccAWSRouteTable(t *testing.T) {
+func TestAccAWSRouteTable_normal(t *testing.T) {
 	var v ec2.RouteTable
 
 	testCheck := func(*terraform.State) error {
@@ -81,6 +81,46 @@ func TestAccAWSRouteTable(t *testing.T) {
 	})
 }
 
+func TestAccAWSRouteTable_instance(t *testing.T) {
+	var v ec2.RouteTable
+
+	testCheck := func(*terraform.State) error {
+		if len(v.Routes) != 2 {
+			return fmt.Errorf("bad routes: %#v", v.Routes)
+		}
+
+		routes := make(map[string]ec2.Route)
+		for _, r := range v.Routes {
+			routes[r.DestinationCidrBlock] = r
+		}
+
+		if _, ok := routes["10.1.0.0/16"]; !ok {
+			return fmt.Errorf("bad routes: %#v", v.Routes)
+		}
+		if _, ok := routes["10.2.0.0/16"]; !ok {
+			return fmt.Errorf("bad routes: %#v", v.Routes)
+		}
+
+		return nil
+	}
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckRouteTableDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccRouteTableConfigInstance,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckRouteTableExists(
+						"aws_route_table.foo", &v),
+					testCheck,
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckRouteTableDestroy(s *terraform.State) error {
 	conn := testAccProvider.ec2conn
 
@@ -182,3 +222,30 @@ resource "aws_route_table" "foo" {
 	}
 }
 `
+
+const testAccRouteTableConfigInstance = `
+resource "aws_vpc" "foo" {
+	cidr_block = "10.1.0.0/16"
+}
+
+resource "aws_subnet" "foo" {
+	cidr_block = "10.1.1.0/24"
+	vpc_id = "${aws_vpc.foo.id}"
+}
+
+resource "aws_instance" "foo" {
+	# us-west-2
+	ami = "ami-4fccb37f"
+	instance_type = "m1.small"
+	subnet_id = "${aws_subnet.foo.id}"
+}
+
+resource "aws_route_table" "foo" {
+	vpc_id = "${aws_vpc.foo.id}"
+
+	route {
+		cidr_block = "10.2.0.0/16"
+		instance_id = "${aws_instance.foo.id}"
+	}
+}
+`
diff --git a/builtin/providers/aws/resources.go b/builtin/providers/aws/resources.go
index 83a6a5b64..d49953de0 100644
--- a/builtin/providers/aws/resources.go
+++ b/builtin/providers/aws/resources.go
@@ -70,6 +70,7 @@ func init() {
 					},
 					Optional: []string{
 						"route.*.gateway_id",
+						"route.*.instance_id",
 					},
 				},
 				Create:  resource_aws_route_table_create,