diff --git a/src/fr/neatmonster/nocheatplus/config/DefaultConfig.java b/src/fr/neatmonster/nocheatplus/config/DefaultConfig.java
index 42e3f71b..0ebd94b4 100644
--- a/src/fr/neatmonster/nocheatplus/config/DefaultConfig.java
+++ b/src/fr/neatmonster/nocheatplus/config/DefaultConfig.java
@@ -433,7 +433,8 @@ public class DefaultConfig extends ConfigFile {
         set(ConfPaths.COMPATIBILITY_BLOCKS + ConfPaths.SUB_IGNOREPASSABLE, Arrays.asList(
                 Material.WOODEN_DOOR.name(), Material.IRON_DOOR_BLOCK.name(), 
                 Material.PISTON_EXTENSION.name(), 
-                Material.PISTON_MOVING_PIECE.name() // TODO: ?
+                Material.PISTON_MOVING_PIECE.name(), // TODO: ?
+                Material.LADDER.name()
         ));
         
         // Update internal factory based on all the new entries to the "actions" section.