diff --git a/fragment/src/main/java/android/support/v4/app/FragmentActivity.java b/fragment/src/main/java/android/support/v4/app/FragmentActivity.java
index 78161a8..e3f5684 100644
--- a/fragment/src/main/java/android/support/v4/app/FragmentActivity.java
+++ b/fragment/src/main/java/android/support/v4/app/FragmentActivity.java
@@ -273,6 +273,7 @@
     @Override
     public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
+        mFragments.noteStateNotSaved();
         mFragments.dispatchConfigurationChanged(newConfig);
     }