diff --git a/src/ifcclash/collision.py b/src/ifcclash/collision.py
old mode 100755
new mode 100644
index 6bc841624a..192c06e4c2
--- a/src/ifcclash/collision.py
+++ b/src/ifcclash/collision.py
@@ -350,7 +350,7 @@ class CollisionManager(object):
         cdata = fcl.CollisionData()
         if return_names or return_data:
             cdata = fcl.CollisionData(request=fcl.CollisionRequest(
-                num_max_contacts=100000, enable_contact=True))
+                num_max_contacts=1000000, enable_contact=True))
 
         self._manager.collide(cdata, fcl.defaultCollisionCallback)