diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/CxxInspectorPackagerConnection.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/CxxInspectorPackagerConnection.java
index 754cd2a455f..dd265211550 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/CxxInspectorPackagerConnection.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/CxxInspectorPackagerConnection.java
@@ -10,6 +10,7 @@ package com.facebook.react.devsupport;
 import android.os.Handler;
 import android.os.Looper;
 import androidx.annotation.Nullable;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.jni.HybridData;
 import com.facebook.proguard.annotations.DoNotStrip;
 import java.io.Closeable;
@@ -21,7 +22,8 @@ import okhttp3.WebSocket;
 import okhttp3.WebSocketListener;
 
 /** Java wrapper around a C++ InspectorPackagerConnection. */
-/* package */ class CxxInspectorPackagerConnection implements IInspectorPackagerConnection {
+/* package */ @Nullsafe(Nullsafe.Mode.LOCAL)
+class CxxInspectorPackagerConnection implements IInspectorPackagerConnection {
   static {
     DevSupportSoLoader.staticInit();
   }
@@ -39,8 +41,7 @@ import okhttp3.WebSocketListener;
 
   public native void closeQuietly();
 
-  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
-  public native void sendEventToAllConnections(String event);
+  public native void sendEventToAllConnections(@Nullable String event);
 
   /** Java wrapper around a C++ IWebSocketDelegate, allowing us to call the interface from Java. */
   @DoNotStrip