--- dnf-2.7.5/dnf/rpm/__init__.py.orig	2019-06-01 12:01:13.245618282 +0200
+++ dnf-2.7.5/dnf/rpm/__init__.py	2019-06-01 12:01:27.285686377 +0200
@@ -37,7 +37,7 @@
             idx = ts.dbMatch('provides', distroverpkg)
         except (TypeError, rpm.error) as e:
             raise dnf.exceptions.Error('Error: %s' % str(e))
-        if not len(idx):
+        if idx:
             continue
         try:
             hdr = next(idx)