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-rw-r--r--apps/s_server.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/apps/s_server.c b/apps/s_server.c
index 3ded4f88cc..28937bd80f 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -470,7 +470,7 @@ static int ssl_servername_cb(SSL *s, int *ad, void *arg)
BIO_printf(p->biodebug, "Hostname in TLS extension: \"");
while ((uc = *cp++) != 0)
BIO_printf(p->biodebug,
- isascii(uc) && isprint(uc) ? "%c" : "\\x%02x", uc);
+ (((uc) & ~127) == 0) && isprint(uc) ? "%c" : "\\x%02x", uc);
BIO_printf(p->biodebug, "\"\n");
}