diff --git a/fallback.c b/fallback.c
index e11b1afb..dee8dfb3 100644
--- a/fallback.c
+++ b/fallback.c
@@ -3,9 +3,10 @@
 ** TecCGraf - PUC-Rio
 */
  
-char *rcs_fallback="$Id: fallback.c,v 1.9 1994/11/21 18:22:58 roberto Stab roberto $";
+char *rcs_fallback="$Id: fallback.c,v 1.10 1994/12/20 21:20:36 roberto Exp $";
 
 #include <stdio.h>
+#include <string.h>
  
 #include "mem.h"
 #include "fallback.h"
diff --git a/hash.c b/hash.c
index e5a0a485..88303b43 100644
--- a/hash.c
+++ b/hash.c
@@ -3,7 +3,9 @@
 ** hash manager for lua
 */
 
-char *rcs_hash="$Id: hash.c,v 2.22 1994/12/20 21:20:36 roberto Exp roberto $";
+char *rcs_hash="$Id: hash.c,v 2.23 1995/01/12 14:19:04 roberto Exp $";
+
+#include <string.h>
 
 #include "mem.h"
 #include "opcode.h"
diff --git a/luamem.c b/luamem.c
index a970712e..a1428418 100644
--- a/luamem.c
+++ b/luamem.c
@@ -3,9 +3,10 @@
 ** TecCGraf - PUC-Rio
 */
 
-char *rcs_mem = "$Id: mem.c,v 1.3 1994/12/20 21:20:36 roberto Exp roberto $";
+char *rcs_mem = "$Id: mem.c,v 1.4 1995/01/13 22:11:12 roberto Exp roberto $";
 
 #include <stdlib.h>
+#include <string.h>
 
 #include "mem.h"
 #include "lua.h"