diff --git a/actions/pathfinder.lua b/actions/pathfinder.lua
index 524779b..874481b 100644
--- a/actions/pathfinder.lua
+++ b/actions/pathfinder.lua
@@ -103,7 +103,7 @@ local function is_good_node(node, exceptions)
       break
     end
   end
-  if node.name ~= nil and not minetest.registered_nodes[node.name].walkable then
+  if node ~= nil and node.name ~= nil and not minetest.registered_nodes[node.name].walkable then
     return pathfinder.node_types.walkable
   elseif is_openable then
     return pathfinder.node_types.openable