2 files changed, 19 insertions, 6 deletions
diff --git a/src/main/java/gregtech/api/enums/OrePrefixes.java b/src/main/java/gregtech/api/enums/OrePrefixes.java
index 27cf37a2de..08dd2b7792 100644
--- a/src/main/java/gregtech/api/enums/OrePrefixes.java
+++ b/src/main/java/gregtech/api/enums/OrePrefixes.java
@@ -3,6 +3,7 @@ package gregtech.api.enums;
 import static gregtech.api.enums.GTValues.B;
 import static gregtech.api.enums.GTValues.D2;
 import static gregtech.api.enums.GTValues.M;
+import static gregtech.api.util.GTRecipeBuilder.DEBUG_MODE_COLLISION;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -1309,20 +1310,32 @@ public enum OrePrefixes {
             return;
         }
 
-        if (aMaterial != Materials._NULL && !used.add(aMaterial)) {
-            GTLog.out.println("Duplicate material registry attempted by " + aModName + " for " + aOreDictName);
+        if (aMaterial.contains(SubTag.NO_RECIPES)) {
             return;
         }
 
-        if (aMaterial.contains(SubTag.NO_RECIPES)) {
+        if (aMaterial == Materials._NULL && !mIsSelfReferencing && mIsMaterialBased) {
             return;
         }
 
-        if (!((aMaterial != Materials._NULL || mIsSelfReferencing || !mIsMaterialBased)
-            && GTUtility.isStackValid(aStack))) {
+        if (!GTUtility.isStackValid(aStack)) {
             return;
         }
 
+        if (aMaterial != Materials._NULL) {
+            if (!used.add(aMaterial)) {
+                if (DEBUG_MODE_COLLISION) {
+                    GTLog.out
+                        .println("Attempted duplicate recipe registration by " + aModName + " for " + aOreDictName);
+                }
+                return;
+            } else {
+                if (DEBUG_MODE_COLLISION) {
+                    GTLog.out.println("New recipe registration by " + aModName + " for " + aOreDictName);
+                }
+            }
+        }
+
         for (IOreRecipeRegistrator tRegistrator : mOreProcessing) {
             if (D2) GTLog.ore.println(
                 "Processing '" + aOreDictName
diff --git a/src/main/java/gregtech/api/util/GTRecipeBuilder.java b/src/main/java/gregtech/api/util/GTRecipeBuilder.java
index 69890e564d..f93f8b38c8 100644
--- a/src/main/java/gregtech/api/util/GTRecipeBuilder.java
+++ b/src/main/java/gregtech/api/util/GTRecipeBuilder.java
@@ -43,7 +43,7 @@ public class GTRecipeBuilder {
     private static final boolean DEBUG_MODE_FULL_ENERGY;
     // Any stable release should be tested at least once with this: -Dgt.recipebuilder.panic.invalid=true
     private static final boolean PANIC_MODE_INVALID;
-    private static final boolean DEBUG_MODE_COLLISION;
+    public static final boolean DEBUG_MODE_COLLISION;
 
     // Any stable release should be tested at least once with this: -Dgt.recipebuilder.panic.collision=true
     private static final boolean PANIC_MODE_COLLISION;