diff --git a/nullptr/analyzer.py b/nullptr/analyzer.py
index 0fa0855..ff18f83 100644
--- a/nullptr/analyzer.py
+++ b/nullptr/analyzer.py
@@ -38,12 +38,12 @@ class Analyzer:
     return next(gates, None)
 
    
-  def find_path(self, orig, to, depth=100, seen=set()):
+  def find_path(self, orig, to, depth=100, seen=None):
     if depth < 1: return None
+    if seen is None:
+      seen = set()
     if type(orig) == System:
-      print('start')
       orig = set([SearchNode(orig,None)])
-    print(orig)
     result = [n for n in orig if n.system==to]
     if len(result) > 0:
       return result[0].path()
@@ -52,12 +52,11 @@ class Analyzer:
       jg = self.get_jumpgate(o.system)
       if jg is None: continue
       for s in jg.systems:
-        if s in seen: continue
+        if s in seen:  continue
         seen.add(s)
         system = self.store.get(System, s)
         if system is None: continue
         dest.add(SearchNode(system, o))
     if len(dest) == 0: 
-      print('dry')
       return None
-    return  self.find_path(dest, to, depth-1, seen)
+    return self.find_path(dest, to, depth-1, seen)