diff --git a/permissionset/variables.tf b/permissionset/variables.tf
index 7a4c471..6f8dc05 100644
--- a/permissionset/variables.tf
+++ b/permissionset/variables.tf
@@ -51,7 +51,7 @@ variable "auto_policy_count" {
   default     = null
 
   validation {
-    condition     = var.auto_policy_count == null || (var.auto_policy_count > 0 && var.auto_policy_count <= 20)
+    condition     = var.auto_policy_count == null || can(var.auto_policy_count > 0 && var.auto_policy_count <= 20)
     error_message = "auto_policy_coount may be null or between 0 and 20, inclusive."
   }
 }