diff --git a/ByRecyclerview/src/main/java/me/jingbin/library/SimpleRefreshHeaderView.java b/ByRecyclerview/src/main/java/me/jingbin/library/SimpleRefreshHeaderView.java
index 2760d49..a11065a 100644
--- a/ByRecyclerview/src/main/java/me/jingbin/library/SimpleRefreshHeaderView.java
+++ b/ByRecyclerview/src/main/java/me/jingbin/library/SimpleRefreshHeaderView.java
@@ -67,12 +67,15 @@ private void initView(Context context) {
     @Override
     public void onMove(float delta) {
         if (getVisibleHeight() > 0 || delta > 0) {
-            setVisibleHeight((int) delta + getVisibleHeight());
-            if (mState <= STATE_RELEASE_TO_REFRESH) {
-                if (getVisibleHeight() > mMeasuredHeight) {
-                    setState(STATE_RELEASE_TO_REFRESH);
-                } else {
-                    setState(STATE_NORMAL);
+            int visibleHeight = (int) delta + getVisibleHeight();
+            if (visibleHeight > 0) {
+                setVisibleHeight(visibleHeight);
+                if (mState <= STATE_RELEASE_TO_REFRESH) {
+                    if (getVisibleHeight() > mMeasuredHeight) {
+                        setState(STATE_RELEASE_TO_REFRESH);
+                    } else {
+                        setState(STATE_NORMAL);
+                    }
                 }
             }
         }