diff --git a/nullptr/analyzer.py b/nullptr/analyzer.py
index c0cc9f5..734340d 100644
--- a/nullptr/analyzer.py
+++ b/nullptr/analyzer.py
@@ -34,6 +34,8 @@ class Analyzer:
         yield m
   
   def find_closest_market(self, resource, sellbuy, location):
+    if type(location) == str:
+      location = self.store.get(System, location)
     market = None
     distance = None
     for m in self.find_markets(resource, sellbuy):