diff --git a/main.tf b/main.tf
index 0e1fac7..7e464be 100644
--- a/main.tf
+++ b/main.tf
@@ -9,11 +9,11 @@ data "aws_eks_cluster" "cluster" {
 
 resource "null_resource" "helm_install" {
   triggers = {
-    chart_name     = var.chart_name
-    chart_version  = var.chart_version
-    release_name   = var.release_name
-    namespace      = var.namespace
-    update_trigger = var.trigger_helm_update != null ? timestamp() : "initial"
+    chart_name          = var.chart_name
+    chart_version       = var.chart_version
+    release_name        = var.release_name
+    namespace           = var.namespace
+    trigger_helm_update = var.trigger_helm_update != false ? timestamp() : "initial"
   }
 
   provisioner "local-exec" {