diff --git a/data/apps/pairs_trading/stat_pair_selector.cfg b/data/apps/pairs_trading/stat_pair_selector.cfg
index a0f956f..6a18057 100644
--- a/data/apps/pairs_trading/stat_pair_selector.cfg
+++ b/data/apps/pairs_trading/stat_pair_selector.cfg
@@ -18,7 +18,7 @@
     , "instrument_validation": {
         "market_data": {
             "maximum_gap_size": "2.0%",
-            "maximum_data_missing": ""
+            "maximum_data_missing": "20.0%"
         }
     }
     , "mr_evaluation": {