diff --git a/.github/workflows/terraform.yml b/.github/workflows/terraform.yml
index 533146c..60b495d 100644
--- a/.github/workflows/terraform.yml
+++ b/.github/workflows/terraform.yml
@@ -16,7 +16,7 @@ jobs:
       - name: Set up Terraform
         uses: marocchino/setup-terraform@v1
         with:
-          version: "0.11.14"
+          version: "0.12.15"
       - name: Build module 'aws-instance-first-script'
         run: cd aws-instance-first-script && terraform init && terraform validate && terraform plan
       - name: Build module 'aws-EC2-with-jenkins'
diff --git a/EC2withJenkins/ec2_jenkins.tf b/EC2withJenkins/ec2_jenkins.tf
index d7739df..32858ce 100644
--- a/EC2withJenkins/ec2_jenkins.tf
+++ b/EC2withJenkins/ec2_jenkins.tf
@@ -1,6 +1,6 @@
 
 resource "aws_instance" "ec2_jenkins" {
-  ami           = lookup(var.ami_id, var.region)
+  ami           = "${lookup(var.ami_id, var.region)}"
   instance_type = var.instance_type
 #  subnet_id     = aws_subnet.public_1.id