diff --git a/variables.tf b/variables.tf
index b4e6e32..57f3b02 100644
--- a/variables.tf
+++ b/variables.tf
@@ -1,5 +1,6 @@
 variable "profile" {
   description = "AWS_PROFILE to use to apply the terraform script."
+  type        = string
   default     = ""
 }