libtrain/lcommon.c |    1 +
 libtrain/roma.c    |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/libtrain/lcommon.c b/libtrain/lcommon.c
index 8519c86..01a775e 100644
--- a/libtrain/lcommon.c
+++ b/libtrain/lcommon.c
@@ -2,6 +2,7 @@
 /* this file is modified by FURUKAWA Yo (you@ss.iij4u.or.jp) */
 
 #include	"lfunc.h"
+#include <string.h>
 
 BYTE	Tmpbuf[ 256 ] ;
 char		FileBuf[ 1024 ] ;
diff --git a/libtrain/roma.c b/libtrain/roma.c
index e61a428..41b969c 100644
--- a/libtrain/roma.c
+++ b/libtrain/roma.c
@@ -13,6 +13,8 @@
 #include	<string.h>
 #endif	/* MAIN */
 
+#include <string.h>
+
 #define		Strlen(s)	strlen((s))
 #define		Strcpy(d,s)	strcpy((d),(s))
 #define		iskanji(x)	(((x)>=0x81 && (x)<=0x9F)||((x)>=0xE0 && (x)<=0xFC))