diff --git a/compress42.c b/compress42.c
index 5d5f049..bec7a2f 100644
--- a/compress42.c
+++ b/compress42.c
@@ -140,6 +140,7 @@
 #	define	MINGW
 #endif
 
+#include        <unistd.h>
 #include	<stdint.h>
 #include	<stdio.h>
 #include	<stdlib.h>
@@ -549,8 +550,8 @@ int				remove_ofname = 0;	/* Remove output file on a error				*/
 char			*ofname = NULL;		/* Output filename								*/
 int				fgnd_flag = 0;		/* Running in background (SIGINT=SIGIGN)		*/
 
-long 			bytes_in;			/* Total number of byte from input				*/
-long 			bytes_out;			/* Total number of byte to output				*/
+long long bytes_in;			/* Total number of byte from input				*/
+long long bytes_out;			/* Total number of byte to output				*/
 
 /*
  * 8086 & 80286 Has a problem with array bigger than 64K so fake the array