diff --git a/util.py b/util.py
index b8ddb93c61fca84c1924b82ccbbcf9a0efa6865c..cb8a8a6c77ab5297410dbde8697f606c12204e99 100644
--- a/util.py
+++ b/util.py
@@ -87,7 +87,7 @@ class BaseCheckList:
 
     def compute(self, frame):
         # Filter bad records from previous level
-        filtered_frame = frame.ix[frame.qc_percent < 1].copy()
+        filtered_frame = frame.copy()#.ix[frame.qc_percent < 1].copy()
         for check in self.checks:
             original_shape = filtered_frame.shape
             filtered_frame = check(filtered_frame, self.parameters)