diff --git a/app/src/main/java/com/gh/common/view/ExpendTextView.java b/app/src/main/java/com/gh/common/view/ExpendTextView.java
index 352091c8c0..f26799c983 100644
--- a/app/src/main/java/com/gh/common/view/ExpendTextView.java
+++ b/app/src/main/java/com/gh/common/view/ExpendTextView.java
@@ -89,7 +89,8 @@ public class ExpendTextView extends android.support.v7.widget.AppCompatTextView
         }
         SpannableStringBuilder msp = new SpannableStringBuilder(content);
         int length = msp.length();
-        msp.replace(length - mExpendText.length(), length, mExpendText);
+        int startPosition = length - mExpendText.length();
+        msp.replace(startPosition < 0 ? 0 : startPosition, length, mExpendText);
         msp.setSpan(new ClickableSpan() {
             @Override
             public void updateDrawState(TextPaint ds) {