diff --git a/React/Modules/RCTUIManager.m b/React/Modules/RCTUIManager.m
index 4cefa9157ad663..a4d9bbb21e88db 100644
--- a/React/Modules/RCTUIManager.m
+++ b/React/Modules/RCTUIManager.m
@@ -548,7 +548,10 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
       });
     }
 
-    if (RCTIsReactRootView(reactTag)) {
+    if (
+        RCTIsReactRootView(reactTag) &&
+        [shadowView isKindOfClass:[RCTRootShadowView class]]
+    ) {
       CGSize contentSize = shadowView.frame.size;
 
       RCTExecuteOnMainQueue(^{