diff --git a/Services/Interfaces/web_interface/static/js/components/data_collector.js b/Services/Interfaces/web_interface/static/js/components/data_collector.js
index 9670eb368..c701e687a 100644
--- a/Services/Interfaces/web_interface/static/js/components/data_collector.js
+++ b/Services/Interfaces/web_interface/static/js/components/data_collector.js
@@ -173,8 +173,7 @@ $(document).ready(function() {
 
     $("#symbolSelect").select2({
         closeOnSelect: false,
-        placeholder: "Symbol",
-        maximumSelectionLength: 5
+        placeholder: "Symbol"
     });
 
     init_data_collector_status_websocket();
diff --git a/Trading/Mode/dip_analyser_trading_mode/dip_analyser_trading.py b/Trading/Mode/dip_analyser_trading_mode/dip_analyser_trading.py
index dae6d3733..23f80b688 100644
--- a/Trading/Mode/dip_analyser_trading_mode/dip_analyser_trading.py
+++ b/Trading/Mode/dip_analyser_trading_mode/dip_analyser_trading.py
@@ -336,17 +336,15 @@ def _ensure_orders_size(sell_base, sell_max, quantity, sell_orders_count,
 
     @staticmethod
     def orders_too_small(min_quantity, min_cost, min_price, sell_price, sell_vol):
-        return (min_price is not None and sell_price < min_price) or \
-               (min_quantity is not None and sell_vol < min_quantity) or \
-               (min_cost is not None and sell_price * sell_vol < min_cost) or \
-               (min_price is None and min_quantity is None and min_cost is None)
+        return (min_price and sell_price < min_price) or \
+               (min_quantity and sell_vol < min_quantity) or \
+               (min_cost and sell_price * sell_vol < min_cost)
 
     @staticmethod
     def orders_too_large(max_quantity, max_cost, max_price, sell_price, sell_vol):
         return (max_price and sell_price > max_price) or \
                (max_quantity and sell_vol > max_quantity) or \
-               (max_cost and sell_price * sell_vol > max_cost) or \
-               (max_price is None and max_quantity is None and max_cost is None)
+               (max_cost and sell_price * sell_vol > max_cost)
 
 
 class DipAnalyserTradingModeProducer(trading_modes.AbstractTradingModeProducer):