diff --git a/run_rpmlint.py b/run_rpmlint.py
--- a/run_rpmlint.py
+++ b/run_rpmlint.py
@@ -110,9 +110,17 @@
         else:
             outcome = 'ABORTED'
 
+    errors = 0
+    warnings = 0
     match = re.search(r'(\d+) errors, (\d+) warnings', output[-1] if output else '')
-    errors = int(match.group(1))
-    warnings = int(match.group(2))
+    if match:
+        errors = int(match.group(1))
+        warnings = int(match.group(2))
+    if not match and outcome != 'ABORTED':
+        errmsg = ('No rpmlint stats on the last line, should not happen. Exit code %d, output:\n%s'
+                  % (proc.returncode, ''.join(output)))
+        log.critical(errmsg)
+        assert False, 'No rpmlint stats on the last line'
 
     result = Result(outcome=outcome, output=output, errors=errors, warnings=warnings)
     return result