diff --git a/mods/ENTITIES/mcl_mobs/api.lua b/mods/ENTITIES/mcl_mobs/api.lua
index 5927741d42..641105e733 100644
--- a/mods/ENTITIES/mcl_mobs/api.lua
+++ b/mods/ENTITIES/mcl_mobs/api.lua
@@ -1280,7 +1280,7 @@ local do_jump = function(self)
 	}, "air")
 
 	-- we don't attempt to jump if there's a stack of blocks blocking
-	if minetest.registered_nodes[nodTop.name] == true then
+	if minetest.registered_nodes[nodTop.name].walkable == true then
 		return false
 	end