diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c
index 26dbd82edb2970f82b430a777f98b1f5d891d10b..ecc7232dc05952ff24e2ea7a83d862a65ad75e31 100644
--- a/src/backend/commands/copy.c
+++ b/src/backend/commands/copy.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.148 2002/02/24 02:33:33 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.149 2002/02/27 01:34:41 ishii Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1041,7 +1041,7 @@ static char *
 CopyReadAttribute(FILE *fp, bool *isnull, char *delim, int *newline, char *null_print)
 {
 	int			c;
-	int			delimc = delim[0];
+	int			delimc = (unsigned char)delim[0];
 
 #ifdef MULTIBYTE
 	int			mblen;