diff --git a/app/src/main/java/com/zhy/stickynavlayout/view/StickyNavLayout.java b/app/src/main/java/com/zhy/stickynavlayout/view/StickyNavLayout.java
index 4044c6c..0a73ac3 100755
--- a/app/src/main/java/com/zhy/stickynavlayout/view/StickyNavLayout.java
+++ b/app/src/main/java/com/zhy/stickynavlayout/view/StickyNavLayout.java
@@ -143,7 +143,7 @@ public void onAnimationUpdate(ValueAnimator animation) {
         }
         mOffsetAnimator.setDuration(Math.min(duration, 600));
 
-        if (velocityY >= 0) {
+        if (velocityY > 0) {
             mOffsetAnimator.setIntValues(currentOffset, topHeight);
             mOffsetAnimator.start();
         }else {