diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 44551ead..dc015ad7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,7 @@ stages:
 variables:
   name: "SongodaCore"
   path: "/builds/$CI_PROJECT_PATH"
-  version: "2.3.45"
+  version: "2.3.46"
 
 build:
   stage: build
diff --git a/Core/src/main/java/com/songoda/core/compatibility/CompatibleMaterial.java b/Core/src/main/java/com/songoda/core/compatibility/CompatibleMaterial.java
index a3ef8a30..a8c39652 100644
--- a/Core/src/main/java/com/songoda/core/compatibility/CompatibleMaterial.java
+++ b/Core/src/main/java/com/songoda/core/compatibility/CompatibleMaterial.java
@@ -30,7 +30,7 @@ public enum CompatibleMaterial {
 	 */
 
     /* 1.16 */
-    ANCIENT_DEBRIES(),
+    ANCIENT_DEBRIS(),
     BASALT(),
     BLACKSTONE(),
     BLACKSTONE_STAIRS(),
@@ -1356,10 +1356,10 @@ public enum CompatibleMaterial {
         if (ServerVersion.isServerVersionAtLeast(ServerVersion.V1_13)) { // Flattening
             return CompatibleMaterial.getMaterialFromNewBlock(block);
         } else { // Pre-Flattening
-            if(block != null){
+            if(block != null) {
                 if (block.getData() != 0) {
                     for (CompatibleMaterial cm : CompatibleMaterial.values()) {
-                        if (cm.getMaterial().equals(block.getType())) {
+                        if (cm.isValidItem() && !cm.usesCompatibility() && cm.getMaterial() != null && cm.getMaterial().equals(block.getType())) {
                             if (cm.getData() == block.getData()) {
                                 return cm;
                             }