diff --git a/registry/coder/modules/kasmvnc/main.tf b/registry/coder/modules/kasmvnc/main.tf
index e39c02b7..054a278e 100644
--- a/registry/coder/modules/kasmvnc/main.tf
+++ b/registry/coder/modules/kasmvnc/main.tf
@@ -71,6 +71,7 @@ resource "coder_script" "kasm_vnc" {
     KASM_VERSION        = var.kasm_version
     SUBDOMAIN           = tostring(var.subdomain)
     PATH_VNC_HTML       = var.subdomain ? "" : file("${path.module}/path_vnc.html")
+    KASM_CONFIG         = jsonencode(var.kasm_config)
   })
 }