selfstrap: hide warning

1 files changed, 1 insertions, 1 deletions

diff --git a/selfstrap b/selfstrap
index 4a9f8e7..d8514b5 100755
--- a/selfstrap
+++ b/selfstrap
@@ -224,7 +224,7 @@ write_sources_list()
                    "deb  ${debian_mirror}           ${target_release}-backports  main  contrib  non-free"  \
                    "deb  ${debian_security_mirror}  ${target_release}$_updates   main  contrib  non-free"
         fi
-        if apt policy | grep -q ' sid/'
+        if apt-cache policy 2>/dev/null | grep -q ' sid/'
         then
             printf '%s\n' \
                     "deb  ${debian_mirror}           sid                         main  contrib  non-free"