diff --git a/jetbrains-gateway/main.tf b/jetbrains-gateway/main.tf
index 5044b2f..f01f8a0 100644
--- a/jetbrains-gateway/main.tf
+++ b/jetbrains-gateway/main.tf
@@ -276,7 +276,7 @@ data "coder_workspace_owner" "me" {}
 resource "coder_app" "gateway" {
   for_each     = local.default_ide_map
   agent_id     = var.agent_id
-  slug         = "${var.slug}_${each.key}"
+  slug         = "${var.slug}-${lower(each.key)}"
   display_name = each.value.name
   icon         = each.value.icon
   external     = true