diff --git a/readline/ChangeLog.Cygnus b/readline/ChangeLog.Cygnus
index 24bcd5ccd3..c330a2c56e 100644
--- a/readline/ChangeLog.Cygnus
+++ b/readline/ChangeLog.Cygnus
@@ -1,3 +1,9 @@
+2001-06-15  Elena Zannoni  <ezannoni@redhat.com>
+
+        * configure.in: Add -fsigned-char to LOCAL_CFLAGS for Linux
+        running on the IBM S/390.
+	* configure: Ditto.
+
 2001-01-07  Michael Sokolov  <msokolov@ivan.Harhan.ORG>
 
 	* rltty.c (save_tty_chars): Fix compilation-stopping typo.
diff --git a/readline/configure b/readline/configure
index ae9bf942bc..8e24e9f9b4 100755
--- a/readline/configure
+++ b/readline/configure
@@ -2542,6 +2542,7 @@ fi
 
 case "$host_cpu" in
 *cray*)	LOCAL_CFLAGS=-DCRAY ;;
+*s390*)	LOCAL_CFLAGS=-fsigned-char ;;
 esac
 
 case "$host_os" in
diff --git a/readline/configure.in b/readline/configure.in
index 780b4df628..1ed154e9cf 100644
--- a/readline/configure.in
+++ b/readline/configure.in
@@ -129,6 +129,7 @@ fi
 
 case "$host_cpu" in
 *cray*)	LOCAL_CFLAGS=-DCRAY ;;
+*s390*)	LOCAL_CFLAGS=-fsigned-char ;;
 esac
 
 case "$host_os" in