1 files changed, 4 insertions, 0 deletions
diff --git a/apps/s_server.c b/apps/s_server.c
index 83feddca3e..2036d51795 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -1394,6 +1394,10 @@ int s_server_main(int argc, char *argv[])
             break;
         case OPT_MSGFILE:
             bio_s_msg = BIO_new_file(opt_arg(), "w");
+            if (bio_s_msg == NULL) {
+                BIO_printf(bio_err, "Error writing file %s\n", opt_arg());
+                goto end;
+            }
             break;
         case OPT_TRACE:
 #ifndef OPENSSL_NO_SSL_TRACE