diff --git a/src/lib/openjpip/boxheader_manager.h b/src/lib/openjpip/boxheader_manager.h
index 91092df9..d12d0732 100644
--- a/src/lib/openjpip/boxheader_manager.h
+++ b/src/lib/openjpip/boxheader_manager.h
@@ -31,6 +31,7 @@
 #ifndef   	BOXHEADER_MANAGER_H_
 # define   	BOXHEADER_MANAGER_H_
 
+#include "openjpeg.h"
 #include "byte_manager.h"
 #include "box_manager.h"
 
diff --git a/src/lib/openjpip/byte_manager.h b/src/lib/openjpip/byte_manager.h
index 696c1f69..62aea8b4 100644
--- a/src/lib/openjpip/byte_manager.h
+++ b/src/lib/openjpip/byte_manager.h
@@ -32,6 +32,7 @@
 #define   	BYTE_MANAGER_H_
 
 #include <stddef.h>
+#include "openjpeg.h"
 #include "opj_stdint.h"
 typedef uint8_t Byte_t;
 typedef uint16_t Byte2_t;