diff --git a/virtweb_frontend/src/widgets/forms/CloudInitEditor.tsx b/virtweb_frontend/src/widgets/forms/CloudInitEditor.tsx
index 7f84f7b..7be3d49 100644
--- a/virtweb_frontend/src/widgets/forms/CloudInitEditor.tsx
+++ b/virtweb_frontend/src/widgets/forms/CloudInitEditor.tsx
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-base-to-string */
+
 import Editor from "@monaco-editor/react";
 import BookIcon from "@mui/icons-material/Book";
 import RefreshIcon from "@mui/icons-material/Refresh";
@@ -262,7 +264,7 @@ function CloudInitUserDataAssistant(p: CloudInitProps): React.ReactElement {
         editable={p.editable}
         label="Show all startup messages on tty1, not serial"
         checked={
-          !!(user_data.get("runcmd") as any | undefined)?.items.find(
+          !!(user_data.get("runcmd") as any)?.items.find(
             (a: any) => a.value === SYSTEMD_NOT_SERIAL
           )
         }
@@ -292,7 +294,7 @@ function CloudInitTextInput(p: {
   refUrl: string;
   attrPath: Iterable<unknown>;
   yaml: YAML.Document;
-  onChange: () => void;
+  onChange?: () => void;
 }): React.ReactElement {
   return (
     <TextInput
@@ -321,7 +323,7 @@ function CloudInitBooleanInput(p: {
   refUrl: string;
   attrPath: Iterable<unknown>;
   yaml: YAML.Document;
-  onChange: () => void;
+  onChange?: () => void;
 }): React.ReactElement {
   return (
     <CheckboxInput
@@ -329,7 +331,7 @@ function CloudInitBooleanInput(p: {
       label={p.name}
       checked={p.yaml.getIn(p.attrPath) === true}
       onValueChange={(v) => {
-        if (v !== undefined) p.yaml.setIn(p.attrPath, v);
+        if (v) p.yaml.setIn(p.attrPath, v);
         else p.yaml.deleteIn(p.attrPath);
         p.onChange?.();
       }}