diff --git a/pkg/terraform/presets.go b/pkg/terraform/presets.go
index c6a46da31..58879d809 100644
--- a/pkg/terraform/presets.go
+++ b/pkg/terraform/presets.go
@@ -1,6 +1,7 @@
 package terraform
 
 import (
+	"fmt"
 	"strings"
 
 	"github.com/zclconf/go-cty/cty"
@@ -38,5 +39,14 @@ func postProcessValues(b *Block, input map[string]cty.Value) map[string]cty.Valu
 		}
 	}
 
+	switch b.TypeLabel() {
+	case "aws_s3_bucket":
+		var bucketName string
+		if bucket := input["bucket"]; bucket.Type().Equals(cty.String) {
+			bucketName = bucket.AsString()
+		}
+		input["arn"] = cty.StringVal(fmt.Sprintf("arn:aws:s3:::%s", bucketName))
+	}
+
 	return input
 }