diff --git a/compress42.c b/compress42.c
index 804d099..b3b3add 100644
--- a/compress42.c
+++ b/compress42.c
@@ -130,6 +130,7 @@
  *   Add variable bit length output.
  *
  */
+#include	<unistd.h>
 #include	<stdio.h>
 #include	<stdlib.h>
 #include	<string.h>
@@ -538,8 +539,8 @@ int				remove_ofname = 0;	/* Remove output file on a error				*/
 char 			ofname[MAXPATHLEN];	/* 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