diff --git a/lmem.c b/lmem.c
index a631f4b1..bce76029 100644
--- a/lmem.c
+++ b/lmem.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lmem.c,v 1.43 2001/01/19 13:20:30 roberto Exp roberto $
+** $Id: lmem.c,v 1.44 2001/01/24 15:45:33 roberto Exp roberto $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */
@@ -42,10 +42,10 @@
 
 #define blocksize(b)	((size_t *)((char *)(b) - HEADER))
 
-mem_int memdebug_numblocks = 0;
-mem_int memdebug_total = 0;
-mem_int memdebug_maxmem = 0;
-mem_int memdebug_memlimit = LONG_MAX;
+unsigned long memdebug_numblocks = 0;
+unsigned long memdebug_total = 0;
+unsigned long memdebug_maxmem = 0;
+unsigned long memdebug_memlimit = ULONG_MAX;
 
 
 static void *checkblock (void *block) {
diff --git a/ltests.h b/ltests.h
index 1cba13e4..9dda1c65 100644
--- a/ltests.h
+++ b/ltests.h
@@ -1,5 +1,5 @@
 /*
-** $Id: $
+** $Id: ltests.h,v 1.1 2001/02/02 15:12:25 roberto Exp roberto $
 ** Internal Header for Debugging of the Lua Implementation
 ** See Copyright Notice in lua.h
 */
@@ -8,8 +8,6 @@
 #define ltests_h
 
 
-#include "llimits.h"
-
 
 #define LUA_DEBUG
 
@@ -23,10 +21,10 @@
 
 
 /* memory allocator control variables */
-extern mem_int memdebug_numblocks;
-extern mem_int memdebug_total;
-extern mem_int memdebug_maxmem;
-extern mem_int memdebug_memlimit;
+extern unsigned long memdebug_numblocks;
+extern unsigned long memdebug_total;
+extern unsigned long memdebug_maxmem;
+extern unsigned long memdebug_memlimit;
 
 
 /* test for lock/unlock */