diff --git a/rubygem-gem2rpm.spec b/rubygem-gem2rpm.spec
index 89587a1..cc972ce 100644
--- a/rubygem-gem2rpm.spec
+++ b/rubygem-gem2rpm.spec
@@ -54,6 +54,9 @@ find %{buildroot}%{gem_instdir}/bin -type f | xargs chmod a+x
 pushd .%{gem_instdir}
 tar xzvf %{SOURCE1}
 
+# Disable this test, since it needs online access (see the comment on line 22).
+sed -i "/test_find_download_url_for_source_address/,/  end/ s/^/#/" test/test_gem2rpm.rb
+
 ruby -Itest -e 'Dir.glob "./test/**/test_*.rb", &method(:require)'
 popd