diff --git a/src/core/module.ts b/src/core/module.ts
index 1202e7d24..78e292a29 100644
--- a/src/core/module.ts
+++ b/src/core/module.ts
@@ -92,7 +92,9 @@ export default <Module>async function docusModule() {
     drivers: [
       {
         base: resolve(options.srcDir, $docus.settings.contentDir),
+        // mount point of driver
         mountPoint: 'pages',
+        // List of Nuxt ignore rules
         ignore: await useNuxtIgnoreList(nuxt)
       },
       {
diff --git a/src/core/parser/index.ts b/src/core/parser/index.ts
index 95d980765..178c5084a 100644
--- a/src/core/parser/index.ts
+++ b/src/core/parser/index.ts
@@ -17,6 +17,14 @@ export function initParser(options: Partial<ParserOptions> = {}) {
 
 export function useParser() {
   return {
+    /**
+     * The list of all extensions that have specific parser in Docus
+     * @returns list of valid extensions
+     */
+    extensions() {
+      return Object.keys(parsers)
+    },
+
     parse: async (file, content) => {
       const extension = extname(file)
       const path = '/' + file.replace(new RegExp(`${extension}$`), '')
diff --git a/src/core/storage/driver.ts b/src/core/storage/driver.ts
index c8f2ab46f..1391d9474 100644
--- a/src/core/storage/driver.ts
+++ b/src/core/storage/driver.ts
@@ -54,9 +54,20 @@ export const docusDriver = defineDriver((options: DriverOptions) => {
 
   const { insert, items } = useDB()
   const { callHook } = useHooks()
-  const parser = useParser()
   const fs = fsDriver(options)
 
+  const parser = useParser()
+
+  // validate key based on its extension
+  const isValidKey = (key: string) => parser.extensions().some(ext => key.endsWith(ext))
+
+  /**
+   * parse specific document and insert parsed data into database
+   *
+   * @param key document file key
+   * @param content documnet conent
+   * @returns parsed object
+   */
   const parseAndInsert = async (key, content) => {
     const document = await parser.parse(key, content)
 
@@ -115,7 +126,14 @@ export const docusDriver = defineDriver((options: DriverOptions) => {
   }
 
   // retrive contents list
-  const getKeys = () => fs.getKeys()
+  const getKeys = async () => {
+    let keys = await fs.getKeys()
+
+    // filter valid keys
+    keys = keys.filter(isValidKey)
+
+    return keys
+  }
 
   const hasItem = key => fs.hasItem(key)
 
@@ -175,6 +193,9 @@ export const docusDriver = defineDriver((options: DriverOptions) => {
   // Watch files and revalidate data
   const watch = callback => {
     return fs.watch(async (event, key) => {
+      // ignore invalid extensions
+      if (!isValidKey(key)) return
+
       if (event === 'update') {
         const content = await fs.getItem(key)