diff --git a/helper/runner.go b/helper/runner.go
index da93560..acb2916 100644
--- a/helper/runner.go
+++ b/helper/runner.go
@@ -238,7 +238,7 @@ func decodeVariableBlock(block *hcl.Block) (*Variable, hcl.Diagnostics) {
 		DeclRange: block.DefRange,
 	}
 
-	content, diags := block.Body.Content(&hcl.BodySchema{
+	content, _, diags := block.Body.PartialContent(&hcl.BodySchema{
 		Attributes: []hcl.AttributeSchema{
 			{
 				Name: "default",
diff --git a/helper/runner_test.go b/helper/runner_test.go
index 16e523a..a5f3828 100644
--- a/helper/runner_test.go
+++ b/helper/runner_test.go
@@ -265,6 +265,7 @@ resource "aws_instance" "foo" {
 			Name: "string interpolation",
 			Src: `
 variable "instance_type" {
+	type = string
   default = "t2.micro"
 }