diff --git a/entry/src/main/java/com/github/phoenix/widget/Keyboard.java b/entry/src/main/java/com/github/phoenix/widget/Keyboard.java
index 365fa241c804a6c43f34be11fe475526d1bbb366..443e1dbbac65dbf617a64c30619d95ad242b0f8c 100644
--- a/entry/src/main/java/com/github/phoenix/widget/Keyboard.java
+++ b/entry/src/main/java/com/github/phoenix/widget/Keyboard.java
@@ -67,7 +67,7 @@ public class Keyboard extends DependentLayout {
      * @param key key
      */
     public void setKeyboardKeys(String[] key) {
-        this.key = key;
+        this.key = key.clone();
         initKeyboardView();
     }