diff --git a/navigation-fragment/src/main/java/androidx/navigation/fragment/FragmentNavigator.java b/navigation-fragment/src/main/java/androidx/navigation/fragment/FragmentNavigator.java
index 7fcdedf..ca4d583 100644
--- a/navigation-fragment/src/main/java/androidx/navigation/fragment/FragmentNavigator.java
+++ b/navigation-fragment/src/main/java/androidx/navigation/fragment/FragmentNavigator.java
@@ -196,7 +196,7 @@ public void onAnimationRepeat(Animation animation) {
     }
 
     private void performPopBack(Fragment preFrag) {
-        if (preFrag != null) {
+        if (preFrag != null && !preFrag.isDetached()) {
             mFragmentManager.beginTransaction().setMaxLifecycle(preFrag, Lifecycle.State.RESUMED).commit();
         }
         mFragmentManager.popBackStack(