diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_12/NMSRegistryDumper.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_12/NMSRegistryDumper.java
index b5734c66..58df4f7d 100644
--- a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_12/NMSRegistryDumper.java
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_12/NMSRegistryDumper.java
@@ -239,7 +239,7 @@ public class NMSRegistryDumper {
         map.put("unpushable", m.getPushReaction() == EnumPistonReaction.BLOCK);
         map.put("adventureModeExempt", getField(m, Material.class, "isAdventureModeExempt", "Q"));
         //map.put("mapColor", rgb(m.getMaterialMapColor().colorValue));
-        map.put("ambientOcclusionLightValue", b.s(bs) ? 0.2F:1.0F);
+        map.put("ambientOcclusionLightValue", b.isOccluding(bs) ? 0.2F:1.0F);
         map.put("grassBlocking", false); // idk what this property was originally supposed to be...grass uses a combination of light values to check growth
         return map;
     }