diff --git a/pisi/repodb.py b/pisi/repodb.py
index c0efe4c9..7a147b45 100644
--- a/pisi/repodb.py
+++ b/pisi/repodb.py
@@ -77,7 +77,7 @@ class RepoDB(object):
 
     def add_repo(self, name, repo_info):
         name = str(name)
-        repo_info = str(repo_info)
+        assert (isinstance(repo_info,Repo))
         if self.d.has_key("repo-" + name):
             raise Error(_('Repository %s already exists') % name)
         self.d["repo-" + name] = repo_info
diff --git a/tests/beta-light.sh b/tests/beta-light.sh
index 1ac10b2c..c0ce0394 100755
--- a/tests/beta-light.sh
+++ b/tests/beta-light.sh
@@ -5,10 +5,10 @@ PATH=$PATH:.
 set -x
 pisi-cli -Dtmp clean
 pisi-cli -B -Dtmp remove unzip
+pisi-cli -Dtmp remove-repo repo1
 set -e
 pisi-cli -Dtmp -E --ignore-build-no build tests/zip/pspec.xml tests/unzip/pspec.xml
 pisi-cli -Dtmp index .
-#pisi-cli -Dtmp remove-repo repo1
 pisi-cli -Dtmp -d add-repo repo1 pisi-index.xml
 pisi-cli -Dtmp list-repo
 pisi-cli -Dtmp update-repo repo1