diff --git a/minizip/mztools.c b/minizip/mztools.c
index bc5c798..cfeb331 100644
--- a/minizip/mztools.c
+++ b/minizip/mztools.c
@@ -10,6 +10,7 @@
 #include <string.h>
 #include "zlib.h"
 #include "unzip.h"
+#include "mztools.h"
 
 #define READ_8(adr)  ((unsigned char)*(adr))
 #define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) )