diff --git a/lib/src/main/java/io/feeeei/circleseekbar/CircleSeekBar.java b/lib/src/main/java/io/feeeei/circleseekbar/CircleSeekBar.java
index 35ab880..8ff323c 100644
--- a/lib/src/main/java/io/feeeei/circleseekbar/CircleSeekBar.java
+++ b/lib/src/main/java/io/feeeei/circleseekbar/CircleSeekBar.java
@@ -368,6 +368,7 @@ public void setCurProcess(int curProcess) {
         if (mChangListener != null) {
             mChangListener.onChanged(this, mMaxProcess, curProcess);
         }
+        mCurAngle = (double) mCurProcess / mMaxProcess * 360.0;
         invalidate();
     }