diff --git a/package.json b/package.json
index e40d15b..727573a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wkit",
-  "version": "1.10.14",
+  "version": "1.11.0",
   "type": "module",
   "description": "A library for building fast, lightweight web components.",
   "main": "dist/index.js",
diff --git a/src/constants.js b/src/constants.js
index 49e7b79..afb01be 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -101,7 +101,7 @@ function getType(v) {
       return { type, default: v, attribute }
 
     default:
-      return { type: String, default: v + '' }
+      return { type: null, default: '' }
   }
 }
 
@@ -131,6 +131,10 @@ export function parsePropsDeclaration(options) {
       options = { type: Array }
       break
 
+    case String:
+      options = { type: String }
+      break
+
     default:
       options = getType(options)
       break
@@ -174,6 +178,9 @@ export function fixedValue(value, options) {
         }
       }
 
+    case null:
+      return value
+
     default:
       return value === null || value === void 0 ? null : value + ''
   }
diff --git a/src/index.js b/src/index.js
index 690f48d..c110ec4 100644
--- a/src/index.js
+++ b/src/index.js
@@ -296,7 +296,7 @@ export class Component extends HTMLElement {
     let options = this.#getPropOptions(name) || {}
     let attrName = options.attrName
 
-    if (options.attribute === false) {
+    if (options.attribute === false || options.type === null) {
       this.removeAttribute(attrName)
       return
     }
@@ -340,7 +340,7 @@ export class Component extends HTMLElement {
     if (options) {
       value = fixedValue(value, options)
 
-      if (options.attribute === false) {
+      if (options.attribute === false || options.type === null) {
         if (value === null) {
           return
         }