diff --git a/tiny_gltf_loader.h b/tiny_gltf_loader.h
index 61557c5..3a5f413 100644
--- a/tiny_gltf_loader.h
+++ b/tiny_gltf_loader.h
@@ -46,6 +46,10 @@
 #include <map>
 #include <string>
 #include <vector>
+#include <cstring>
+
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
 
 namespace tinygltf {