diff --git a/osc/util/debquery.py b/osc/util/debquery.py
index cae217c1..3d56880f 100644
--- a/osc/util/debquery.py
+++ b/osc/util/debquery.py
@@ -116,7 +116,7 @@ class DebQuery(packagequery.PackageQuery, packagequery.PackageQueryResult):
         if res != 0:
             return res
         res = DebQuery.debvercmp(self.version(), debq.version())
-        if res != None:
+        if res != 0:
             return res
         res = DebQuery.debvercmp(self.release(), debq.release())
         return res