diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.kt
index e4879d46d51..43852f80646 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.kt
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.kt
@@ -9,5 +9,5 @@ package com.facebook.react.uimanager
 
 /** A task to execute on the UI View for third party libraries. */
 public fun interface UIBlock {
-  public fun execute(nativeViewHierarchyManager: NativeViewHierarchyManager?): Unit
+  public fun execute(nativeViewHierarchyManager: NativeViewHierarchyManager): Unit
 }