diff --git a/0001-On_s390_con3270_disable_ANSI_colour_esc.patch b/0001-On_s390_con3270_disable_ANSI_colour_esc.patch
index 5428baa..87a6709 100644
--- a/0001-On_s390_con3270_disable_ANSI_colour_esc.patch
+++ b/0001-On_s390_con3270_disable_ANSI_colour_esc.patch
@@ -67,7 +67,7 @@
          assert(j);
  
 +        if (_unlikely_(is_ansi_console < 0)) {
-+                int fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
++                int fd = open_terminal("/dev/console", O_RDONLY|O_NOCTTY|O_CLOEXEC);
 +                if (fd < 0)
 +                        is_ansi_console = 0;
 +                else {