diff --git a/packages/react-native/ReactCommon/react/renderer/core/Props.cpp b/packages/react-native/ReactCommon/react/renderer/core/Props.cpp
index c52951b66ab..6f62ff59b8f 100644
--- a/packages/react-native/ReactCommon/react/renderer/core/Props.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/core/Props.cpp
@@ -6,7 +6,6 @@
  */
 
 #include "Props.h"
-#include "PropsMapBuffer.h"
 
 #include <folly/dynamic.h>
 #include <react/renderer/core/CoreFeatures.h>
@@ -48,4 +47,27 @@ void Props::setProp(
   }
 }
 
+#ifdef ANDROID
+
+constexpr MapBuffer::Key PROPS_NATIVE_ID = 1;
+
+void Props::propsDiffMapBuffer(
+    Props const *oldPropsPtr,
+    MapBufferBuilder &builder) const {
+  // Call with default props if necessary
+  if (oldPropsPtr == nullptr) {
+    Props defaultProps{};
+    propsDiffMapBuffer(&defaultProps, builder);
+    return;
+  }
+
+  Props const &oldProps = *oldPropsPtr;
+  Props const &newProps = *this;
+
+  if (oldProps.nativeId != newProps.nativeId) {
+    builder.putString(PROPS_NATIVE_ID, nativeId);
+  }
+}
+#endif
+
 } // namespace facebook::react
diff --git a/packages/react-native/ReactCommon/react/renderer/core/PropsMapBuffer.cpp b/packages/react-native/ReactCommon/react/renderer/core/PropsMapBuffer.cpp
deleted file mode 100644
index c4f8c1153b9..00000000000
--- a/packages/react-native/ReactCommon/react/renderer/core/PropsMapBuffer.cpp
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "PropsMapBuffer.h"
-#include "Props.h"
-
-#ifdef ANDROID
-
-namespace facebook::react {
-
-void Props::propsDiffMapBuffer(
-    Props const *oldPropsPtr,
-    MapBufferBuilder &builder) const {
-  // Call with default props if necessary
-  if (oldPropsPtr == nullptr) {
-    Props defaultProps{};
-    propsDiffMapBuffer(&defaultProps, builder);
-    return;
-  }
-
-  Props const &oldProps = *oldPropsPtr;
-  Props const &newProps = *this;
-
-  if (oldProps.nativeId != newProps.nativeId) {
-    builder.putString(PROPS_NATIVE_ID, nativeId);
-  }
-}
-
-} // namespace facebook::react
-#endif
diff --git a/packages/react-native/ReactCommon/react/renderer/core/PropsMapBuffer.h b/packages/react-native/ReactCommon/react/renderer/core/PropsMapBuffer.h
deleted file mode 100644
index 66d1d97b610..00000000000
--- a/packages/react-native/ReactCommon/react/renderer/core/PropsMapBuffer.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#ifdef ANDROID
-
-#include <react/renderer/mapbuffer/MapBuffer.h>
-#include <react/renderer/mapbuffer/MapBufferBuilder.h>
-
-namespace facebook::react {
-
-constexpr MapBuffer::Key PROPS_MAX = 1;
-constexpr MapBuffer::Key PROPS_NATIVE_ID = 1;
-
-} // namespace facebook::react
-
-#endif