diff --git a/ariba/summary.py b/ariba/summary.py
index 732a825d..f7630df4 100644
--- a/ariba/summary.py
+++ b/ariba/summary.py
@@ -322,7 +322,7 @@ def run(self):
         self._check_files_exist()
         rows = Summary._gather_output_rows(self.filenames, self.min_id)
 
-        if self.filter_rows:
+        if self.filter_output:
             rows = Summary._filter_output_rows(rows)
 
         if self.outfile.endswith('.xls'):