diff --git a/library/src/main/java/com/github/ksoichiro/android/observablescrollview/ObservableRecyclerView.java b/library/src/main/java/com/github/ksoichiro/android/observablescrollview/ObservableRecyclerView.java
index 2f84828c..92c8deb4 100644
--- a/library/src/main/java/com/github/ksoichiro/android/observablescrollview/ObservableRecyclerView.java
+++ b/library/src/main/java/com/github/ksoichiro/android/observablescrollview/ObservableRecyclerView.java
@@ -74,6 +74,10 @@ public ObservableRecyclerView(Context context, AttributeSet attrs, int defStyle)
 
     @Override
     public void onRestoreInstanceState(Parcelable state) {
+        if (!(state instanceof SavedState)) {
+            super.onRestoreInstanceState(state);
+            return;
+        }
         SavedState ss = (SavedState) state;
         mPrevFirstVisiblePosition = ss.prevFirstVisiblePosition;
         mPrevFirstVisibleChildHeight = ss.prevFirstVisibleChildHeight;