diff --git a/LIBSCII.py b/LIBSCII.py
index 0ae607c..912dba8 100644
--- a/LIBSCII.py
+++ b/LIBSCII.py
@@ -63,7 +63,7 @@ class Scii:
             self.collision_npc = npc
             return 2
       except:
-        if x >= 0 and x < self.get_map_width() and y >= 0 and y < self.get_map_height(): return 0
+        if x >= 0 and x < self.get_map_width(map_data) and y >= 0 and y < self.get_map_height(map_data): return 0
         else: return 1
     return 0
   def _default_intext(self):