diff --git a/drivers/amazonec2/amazonec2.go b/drivers/amazonec2/amazonec2.go
index d0a594468f..a0e7dd4060 100644
--- a/drivers/amazonec2/amazonec2.go
+++ b/drivers/amazonec2/amazonec2.go
@@ -70,51 +70,58 @@ func init() {
 func GetCreateFlags() []cli.Flag {
 	return []cli.Flag{
 		cli.StringFlag{
-			Name:  "amazonec2-access-key",
-			Usage: "AWS Access Key",
-			Value: "",
+			Name:   "amazonec2-access-key",
+			Usage:  "AWS Access Key",
+			Value:  "",
+			EnvVar: "AWS_ACCESS_KEY_ID",
 		},
 		cli.StringFlag{
-			Name:  "amazonec2-secret-key",
-			Usage: "AWS Secret Key",
-			Value: "",
+			Name:   "amazonec2-secret-key",
+			Usage:  "AWS Secret Key",
+			Value:  "",
+			EnvVar: "AWS_SECRET_ACCESS_KEY",
 		},
 		cli.StringFlag{
-			Name:  "amazonec2-ami",
-			Usage: "AWS machine image",
-			Value: defaultAMI,
+			Name:   "amazonec2-ami",
+			Usage:  "AWS machine image",
+			Value:  defaultAMI,
+			EnvVar: "AWS_AMI",
 		},
 		cli.StringFlag{
-			Name:  "amazonec2-region",
-			Usage: "AWS region",
-			Value: defaultRegion,
+			Name:   "amazonec2-region",
+			Usage:  "AWS region",
+			Value:  defaultRegion,
+			EnvVar: "AWS_DEFAULT_REGION",
 		},
 		cli.StringFlag{
 			Name:   "amazonec2-vpc-id",
 			Usage:  "AWS VPC id",
 			Value:  "",
-			EnvVar: "AMAZONEC2_VPC_ID",
+			EnvVar: "AWS_VPC_ID",
 		},
 		cli.StringFlag{
 			Name:   "amazonec2-zone",
 			Usage:  "AWS zone for instance (i.e. a,b,c,d,e)",
 			Value:  "a",
-			EnvVar: "AMAZONEC2_ZONE",
+			EnvVar: "AWS_ZONE",
 		},
 		cli.StringFlag{
-			Name:  "amazonec2-subnet-id",
-			Usage: "AWS VPC subnet id",
-			Value: "",
+			Name:   "amazonec2-subnet-id",
+			Usage:  "AWS VPC subnet id",
+			Value:  "",
+			EnvVar: "AWS_SUBNET_ID",
 		},
 		cli.StringFlag{
-			Name:  "amazonec2-instance-type",
-			Usage: "AWS instance type",
-			Value: defaultInstanceType,
+			Name:   "amazonec2-instance-type",
+			Usage:  "AWS instance type",
+			Value:  defaultInstanceType,
+			EnvVar: "AWS_INSTANCE_TYPE",
 		},
 		cli.IntFlag{
-			Name:  "amazonec2-root-size",
-			Usage: "AWS root disk size (in GB)",
-			Value: defaultRootSize,
+			Name:   "amazonec2-root-size",
+			Usage:  "AWS root disk size (in GB)",
+			Value:  defaultRootSize,
+			EnvVar: "AWS_ROOT_SIZE",
 		},
 	}
 }