diff --git a/spine-cpp/spine-cpp/include/spine/SkeletonBinary.h b/spine-cpp/spine-cpp/include/spine/SkeletonBinary.h
index 88af8bd77..0a59f3085 100644
--- a/spine-cpp/spine-cpp/include/spine/SkeletonBinary.h
+++ b/spine-cpp/spine-cpp/include/spine/SkeletonBinary.h
@@ -68,7 +68,7 @@ namespace spine {
 
 		explicit SkeletonBinary(Atlas* atlasArray);
 
-		explicit SkeletonBinary(AttachmentLoader* attachmentLoader);
+		explicit SkeletonBinary(AttachmentLoader* attachmentLoader, bool ownsLoader = false);
 
 		~SkeletonBinary();
 
diff --git a/spine-cpp/spine-cpp/include/spine/SkeletonJson.h b/spine-cpp/spine-cpp/include/spine/SkeletonJson.h
index b719855a4..aeb60f5ba 100644
--- a/spine-cpp/spine-cpp/include/spine/SkeletonJson.h
+++ b/spine-cpp/spine-cpp/include/spine/SkeletonJson.h
@@ -57,7 +57,7 @@ class SP_API SkeletonJson : public SpineObject {
 public:
 	explicit SkeletonJson(Atlas *atlas);
 
-	explicit SkeletonJson(AttachmentLoader *attachmentLoader);
+	explicit SkeletonJson(AttachmentLoader *attachmentLoader, bool ownsLoader = false);
 
 	~SkeletonJson();
 
diff --git a/spine-cpp/spine-cpp/src/spine/SkeletonBinary.cpp b/spine-cpp/spine-cpp/src/spine/SkeletonBinary.cpp
index f26398a77..ac61ab83d 100644
--- a/spine-cpp/spine-cpp/src/spine/SkeletonBinary.cpp
+++ b/spine-cpp/spine-cpp/src/spine/SkeletonBinary.cpp
@@ -98,8 +98,8 @@ SkeletonBinary::SkeletonBinary(Atlas *atlasArray) : _attachmentLoader(
 
 }
 
-SkeletonBinary::SkeletonBinary(AttachmentLoader *attachmentLoader) : _attachmentLoader(attachmentLoader), _error(),
-	_scale(1), _ownsLoader(false)
+SkeletonBinary::SkeletonBinary(AttachmentLoader* attachmentLoader, bool ownsLoader) : _attachmentLoader(attachmentLoader), _error(),
+_scale(1), _ownsLoader(ownsLoader)
 {
 	assert(_attachmentLoader != NULL);
 }
diff --git a/spine-cpp/spine-cpp/src/spine/SkeletonJson.cpp b/spine-cpp/spine-cpp/src/spine/SkeletonJson.cpp
index 18be34c90..54f94c6a9 100644
--- a/spine-cpp/spine-cpp/src/spine/SkeletonJson.cpp
+++ b/spine-cpp/spine-cpp/src/spine/SkeletonJson.cpp
@@ -84,8 +84,8 @@ SkeletonJson::SkeletonJson(Atlas *atlas) : _attachmentLoader(new(__FILE__, __LIN
 	_scale(1), _ownsLoader(true)
 {}
 
-SkeletonJson::SkeletonJson(AttachmentLoader *attachmentLoader) : _attachmentLoader(attachmentLoader), _scale(1),
-	_ownsLoader(false)
+SkeletonJson::SkeletonJson(AttachmentLoader *attachmentLoader, bool ownsLoader) : _attachmentLoader(attachmentLoader), _scale(1),
+	_ownsLoader(ownsLoader)
 {
 	assert(_attachmentLoader != NULL);
 }