diff --git a/spine-c/include/spine/Atlas.h b/spine-c/include/spine/Atlas.h
index f6c0133f50..c4d4eb8b1c 100644
--- a/spine-c/include/spine/Atlas.h
+++ b/spine-c/include/spine/Atlas.h
@@ -95,9 +95,9 @@ typedef struct {
 } Atlas;
 
 /* Image files referenced in the atlas file will be prefixed with dir. */
-Atlas* Atlas_readAtlas (const char* data, int length, const char* dir);
+Atlas* Atlas_readAtlas (const char* data, int length, const char* dir, void *param);
 /* Image files referenced in the atlas file will be prefixed with the directory containing the atlas file. */
-Atlas* Atlas_readAtlasFile (const char* path);
+Atlas* Atlas_readAtlasFile (const char* path, void *param);
 void Atlas_dispose (Atlas* atlas);
 
 /* Returns 0 if the region was not found. */
diff --git a/spine-c/include/spine/extension.h b/spine-c/include/spine/extension.h
index c12a0a8f3d..6a5da50263 100644
--- a/spine-c/include/spine/extension.h
+++ b/spine-c/include/spine/extension.h
@@ -96,7 +96,7 @@ extern "C" {
  * Functions that must be implemented:
  */
 
-void _AtlasPage_createTexture (AtlasPage* self, const char* path);
+void _AtlasPage_createTexture (AtlasPage* self, const char* path, void *param);
 void _AtlasPage_disposeTexture (AtlasPage* self);
 char* _Util_readFile (const char* path, int* length);
 
diff --git a/spine-c/src/spine/Atlas.c b/spine-c/src/spine/Atlas.c
index b2b29d4f86..d063869bb3 100644
--- a/spine-c/src/spine/Atlas.c
+++ b/spine-c/src/spine/Atlas.c
@@ -166,7 +166,7 @@ static const char* formatNames[] = {"Alpha", "Intensity", "LuminanceAlpha", "RGB
 static const char* textureFilterNames[] = {"Nearest", "Linear", "MipMap", "MipMapNearestNearest", "MipMapLinearNearest",
 		"MipMapNearestLinear", "MipMapLinearLinear"};
 
-Atlas* Atlas_readAtlas (const char* begin, int length, const char* dir) {
+Atlas* Atlas_readAtlas (const char* begin, int length, const char* dir, void *param) {
 	int count;
 	const char* end = begin + length;
 	int dirLength = strlen(dir);
@@ -211,7 +211,7 @@ Atlas* Atlas_readAtlas (const char* begin, int length, const char* dir) {
 				page->vWrap = *str.begin == 'x' ? ATLAS_CLAMPTOEDGE : (*str.begin == 'y' ? ATLAS_REPEAT : ATLAS_REPEAT);
 			}
 
-			_AtlasPage_createTexture(page, path);
+			_AtlasPage_createTexture(page, path, param);
 			FREE(path);
 		} else {
 			AtlasRegion *region = AtlasRegion_create();
@@ -280,7 +280,7 @@ Atlas* Atlas_readAtlas (const char* begin, int length, const char* dir) {
 	return self;
 }
 
-Atlas* Atlas_readAtlasFile (const char* path) {
+Atlas* Atlas_readAtlasFile (const char* path, void *param) {
 	int dirLength;
 	char *dir;
 	int length;
@@ -299,7 +299,7 @@ Atlas* Atlas_readAtlasFile (const char* path) {
 	dir[dirLength] = '\0';
 
 	data = _Util_readFile(path, &length);
-	if (data) atlas = Atlas_readAtlas(data, length, dir);
+	if (data) atlas = Atlas_readAtlas(data, length, dir, param);
 
 	FREE(data);
 	FREE(dir);
diff --git a/spine-c/src/spine/Json.c b/spine-c/src/spine/Json.c
index 91f4983415..b39b4693ca 100644
--- a/spine-c/src/spine/Json.c
+++ b/spine-c/src/spine/Json.c
@@ -23,7 +23,7 @@
 /* Json */
 /* JSON parser in C. */
 
-#include "Json.h"
+#include <spine/Json.h>
 #include <math.h>
 #include <stdio.h>
 #include <ctype.h>
diff --git a/spine-c/src/spine/SkeletonJson.c b/spine-c/src/spine/SkeletonJson.c
index d980fbb627..7228c254f9 100644
--- a/spine-c/src/spine/SkeletonJson.c
+++ b/spine-c/src/spine/SkeletonJson.c
@@ -27,7 +27,7 @@
 #include <math.h>
 #include <stdio.h>
 #include <math.h>
-#include "Json.h"
+#include <spine/Json.h>
 #include <spine/extension.h>
 #include <spine/RegionAttachment.h>
 #include <spine/AtlasAttachmentLoader.h>