diff --git a/README.md b/README.md
index 79fda2f..02e5fc0 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@
             />
 
 
-＃ MIT
+# MIT
 
 MIT License
 
diff --git a/corelibrary/src/main/java/com/dalimao/corelibrary/VerificationCodeInput.java b/corelibrary/src/main/java/com/dalimao/corelibrary/VerificationCodeInput.java
index e950f36..5f06b9c 100644
--- a/corelibrary/src/main/java/com/dalimao/corelibrary/VerificationCodeInput.java
+++ b/corelibrary/src/main/java/com/dalimao/corelibrary/VerificationCodeInput.java
@@ -86,12 +86,6 @@ public class VerificationCodeInput extends ViewGroup {
             @Override
             public void afterTextChanged(Editable s) {
                 if (s.length() == 0) {
-                    int id = currentFocusChild.getId();
-                    if (id > 0) {
-                        EditText editText = (EditText) getChildAt((currentFocusChild.getId() - 1) % box);
-                        editText.requestFocus();
-
-                    }
                 } else {
                     checkAndCommit();
                 }
diff --git a/corelibrary/src/main/res/drawable/verification_edit_bg_focus.xml b/corelibrary/src/main/res/drawable/verification_edit_bg_focus.xml
index b85421f..8276456 100644
--- a/corelibrary/src/main/res/drawable/verification_edit_bg_focus.xml
+++ b/corelibrary/src/main/res/drawable/verification_edit_bg_focus.xml
@@ -2,7 +2,7 @@
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
     <solid android:color="#FFFFFF" />
-    <corners android:radius="3dip" />
+    <corners android:radius="2dip" />
     <stroke
         android:width="1dip"
         android:color="#ffee33" />
diff --git a/corelibrary/src/main/res/drawable/verification_edit_bg_normal.xml b/corelibrary/src/main/res/drawable/verification_edit_bg_normal.xml
index d66d1ae..1ab106c 100644
--- a/corelibrary/src/main/res/drawable/verification_edit_bg_normal.xml
+++ b/corelibrary/src/main/res/drawable/verification_edit_bg_normal.xml
@@ -3,7 +3,7 @@
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
     <solid android:color="#FaFafa" />
-    <corners android:radius="3dip" />
+    <corners android:radius="2dip" />
     <stroke
         android:width="1dip"
         android:color="#BDC7D8" />