diff --git a/tests/_check_install_source.pm b/tests/_check_install_source.pm
index 0cb22f8a..360d9971 100644
--- a/tests/_check_install_source.pm
+++ b/tests/_check_install_source.pm
@@ -19,7 +19,9 @@ sub run {
 
     # check that the repo was used
     $self->root_console;
-    if ($addrepourl) {
+    # inst.addrepo doesn't actually work in < F29, so don't check it
+    my $version = lc(get_var("VERSION"));
+    if ($addrepourl && ($version eq 'rawhide' || $version > 28)) {
         if ($addrepourl =~ m,^nfs://,,) {
             # this line tells us it set up a repo for our URL...
             assert_script_run 'grep "repo addrepo.*' . ${addrepourl} . '" /tmp/packaging.log';