diff --git a/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.cpp b/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.cpp
index 1cf0bba73..4bcc9156f 100644
--- a/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.cpp
+++ b/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.cpp
@@ -276,7 +276,7 @@ Texture2D* SkeletonRenderer::getTexture (spSkinnedMeshAttachment* attachment) co
 	return (Texture2D*)((spAtlasRegion*)attachment->rendererObject)->page->rendererObject;
 }
 
-Rect SkeletonRenderer::boundingBox () {
+Rect SkeletonRenderer::getBoundingBox () const {
 	float minX = FLT_MAX, minY = FLT_MAX, maxX = FLT_MIN, maxY = FLT_MIN;
 	float scaleX = getScaleX(), scaleY = getScaleY();
 	for (int i = 0; i < skeleton->slotCount; ++i) {
diff --git a/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.h b/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.h
index 4ecb08669..e8a2fc655 100644
--- a/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.h
+++ b/spine-cocos2dx/3.0/src/spine/SkeletonRenderer.h
@@ -58,10 +58,10 @@ public:
 
 	virtual ~SkeletonRenderer ();
 
-	virtual void update (float deltaTime);
+	virtual void update (float deltaTime) override;
 	virtual void draw(cocos2d::Renderer* renderer, const kmMat4& transform, bool transformUpdated) override;
 	virtual void drawSkeleton (const kmMat4& transform, bool transformUpdated);
-	virtual cocos2d::Rect boundingBox ();
+	virtual cocos2d::Rect getBoundingBox () const override;
 
 	// --- Convenience methods for common Skeleton_* functions.
 	void updateWorldTransform ();
diff --git a/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.cpp b/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.cpp
index 66c4653c5..c79c3ebde 100644
--- a/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.cpp
+++ b/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.cpp
@@ -278,7 +278,7 @@ Texture2D* SkeletonRenderer::getTexture (spSkinnedMeshAttachment* attachment) co
 	return (Texture2D*)((spAtlasRegion*)attachment->rendererObject)->page->rendererObject;
 }
 
-Rect SkeletonRenderer::boundingBox () {
+Rect SkeletonRenderer::getBoundingBox () const {
 	float minX = FLT_MAX, minY = FLT_MAX, maxX = FLT_MIN, maxY = FLT_MIN;
 	float scaleX = getScaleX(), scaleY = getScaleY();
 	for (int i = 0; i < skeleton->slotCount; ++i) {
diff --git a/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.h b/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.h
index 981ee617e..d38234de1 100644
--- a/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.h
+++ b/spine-cocos2dx/3.1/src/spine/SkeletonRenderer.h
@@ -58,10 +58,10 @@ public:
 
 	virtual ~SkeletonRenderer ();
 
-	virtual void update (float deltaTime);
+	virtual void update (float deltaTime) override;
 	virtual void draw (cocos2d::Renderer* renderer, const cocos2d::Matrix& transform, bool transformUpdated) override;
 	virtual void drawSkeleton (const cocos2d::Matrix& transform, bool transformUpdated);
-	virtual cocos2d::Rect boundingBox ();
+	virtual cocos2d::Rect getBoundingBox () const override;
 
 	// --- Convenience methods for common Skeleton_* functions.
 	void updateWorldTransform ();