diff --git a/tradedb.py b/tradedb.py
index 834af95c..91f902fb 100644
--- a/tradedb.py
+++ b/tradedb.py
@@ -343,6 +343,7 @@ def distFromStar(self, addSuffix=False):
             return '{:n}K'.format(int(ls / 1000))+suffix
         return '{:.2f}ly'.format(ls / (365*24*60*60))
 
+    @property
     def isTrading(self):
         """
         True if the station is thought to be trading.