diff --git a/React/CSSLayout/CSSLayout-internal.h b/React/CSSLayout/CSSLayout-internal.h
deleted file mode 100644
index da417da357b..00000000000
--- a/React/CSSLayout/CSSLayout-internal.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#pragma once
-
-#include "CSSLayout.h"
-#include "CSSNodeList.h"
-
-CSS_EXTERN_C_BEGIN
-
-typedef struct CSSCachedMeasurement {
-  float availableWidth;
-  float availableHeight;
-  CSSMeasureMode widthMeasureMode;
-  CSSMeasureMode heightMeasureMode;
-
-  float computedWidth;
-  float computedHeight;
-} CSSCachedMeasurement;
-
-// This value was chosen based on empiracle data. Even the most complicated
-// layouts should not require more than 16 entries to fit within the cache.
-enum { CSS_MAX_CACHED_RESULT_COUNT = 16 };
-
-typedef struct CSSLayout {
-  float position[4];
-  float dimensions[2];
-  CSSDirection direction;
-
-  float computedFlexBasis;
-
-  // Instead of recomputing the entire layout every single time, we
-  // cache some information to break early when nothing changed
-  uint32_t generationCount;
-  CSSDirection lastParentDirection;
-
-  uint32_t nextCachedMeasurementsIndex;
-  CSSCachedMeasurement cachedMeasurements[CSS_MAX_CACHED_RESULT_COUNT];
-  float measuredDimensions[2];
-
-  CSSCachedMeasurement cached_layout;
-} CSSLayout;
-
-typedef struct CSSStyle {
-  CSSDirection direction;
-  CSSFlexDirection flexDirection;
-  CSSJustify justifyContent;
-  CSSAlign alignContent;
-  CSSAlign alignItems;
-  CSSAlign alignSelf;
-  CSSPositionType positionType;
-  CSSWrapType flexWrap;
-  CSSOverflow overflow;
-  float flexGrow;
-  float flexShrink;
-  float flexBasis;
-  float margin[CSSEdgeCount];
-  float position[CSSEdgeCount];
-  float padding[CSSEdgeCount];
-  float border[CSSEdgeCount];
-  float dimensions[2];
-  float minDimensions[2];
-  float maxDimensions[2];
-} CSSStyle;
-
-typedef struct CSSNode {
-  CSSStyle style;
-  CSSLayout layout;
-  uint32_t lineIndex;
-  bool hasNewLayout;
-  bool isTextNode;
-  CSSNodeRef parent;
-  CSSNodeListRef children;
-  bool isDirty;
-
-  struct CSSNode *nextChild;
-
-  CSSSize (*measure)(void *context,
-                     float width,
-                     CSSMeasureMode widthMode,
-                     float height,
-                     CSSMeasureMode heightMode);
-  void (*print)(void *context);
-  void *context;
-} CSSNode;
-
-CSS_EXTERN_C_END
diff --git a/React/CSSLayout/CSSLayout.c b/React/CSSLayout/CSSLayout.c
index bdd91155ec5..7a5766edae6 100644
--- a/React/CSSLayout/CSSLayout.c
+++ b/React/CSSLayout/CSSLayout.c
@@ -9,7 +9,8 @@
 
 #include <string.h>
 
-#include "CSSLayout-internal.h"
+#include "CSSLayout.h"
+#include "CSSNodeList.h"
 
 #ifdef _MSC_VER
 #include <float.h>
@@ -23,6 +24,82 @@ __forceinline const float fmaxf(const float a, const float b) {
 #endif
 #endif
 
+typedef struct CSSCachedMeasurement {
+  float availableWidth;
+  float availableHeight;
+  CSSMeasureMode widthMeasureMode;
+  CSSMeasureMode heightMeasureMode;
+
+  float computedWidth;
+  float computedHeight;
+} CSSCachedMeasurement;
+
+// This value was chosen based on empiracle data. Even the most complicated
+// layouts should not require more than 16 entries to fit within the cache.
+enum { CSS_MAX_CACHED_RESULT_COUNT = 16 };
+
+typedef struct CSSLayout {
+  float position[4];
+  float dimensions[2];
+  CSSDirection direction;
+
+  float computedFlexBasis;
+
+  // Instead of recomputing the entire layout every single time, we
+  // cache some information to break early when nothing changed
+  uint32_t generationCount;
+  CSSDirection lastParentDirection;
+
+  uint32_t nextCachedMeasurementsIndex;
+  CSSCachedMeasurement cachedMeasurements[CSS_MAX_CACHED_RESULT_COUNT];
+  float measuredDimensions[2];
+
+  CSSCachedMeasurement cached_layout;
+} CSSLayout;
+
+typedef struct CSSStyle {
+  CSSDirection direction;
+  CSSFlexDirection flexDirection;
+  CSSJustify justifyContent;
+  CSSAlign alignContent;
+  CSSAlign alignItems;
+  CSSAlign alignSelf;
+  CSSPositionType positionType;
+  CSSWrapType flexWrap;
+  CSSOverflow overflow;
+  float flexGrow;
+  float flexShrink;
+  float flexBasis;
+  float margin[CSSEdgeCount];
+  float position[CSSEdgeCount];
+  float padding[CSSEdgeCount];
+  float border[CSSEdgeCount];
+  float dimensions[2];
+  float minDimensions[2];
+  float maxDimensions[2];
+} CSSStyle;
+
+typedef struct CSSNode {
+  CSSStyle style;
+  CSSLayout layout;
+  uint32_t lineIndex;
+  bool hasNewLayout;
+  bool isTextNode;
+  CSSNodeRef parent;
+  CSSNodeListRef children;
+  bool isDirty;
+
+  struct CSSNode *nextChild;
+
+  CSSSize (*measure)(void *context,
+                     float width,
+                     CSSMeasureMode widthMode,
+                     float height,
+                     CSSMeasureMode heightMode);
+  void (*print)(void *context);
+  void *context;
+} CSSNode;
+
 static float
 computedEdgeValue(const float edges[CSSEdgeCount], const CSSEdge edge, const float defaultValue) {
   CSS_ASSERT(edge <= CSSEdgeEnd, "Cannot get computed value of multi-edge shorthands");