diff --git a/common/api/src/main/java/com/dfsek/terra/api/structure/feature/BinaryColumn.java b/common/api/src/main/java/com/dfsek/terra/api/structure/feature/BinaryColumn.java
index 7f8e53e44..26e2269f1 100644
--- a/common/api/src/main/java/com/dfsek/terra/api/structure/feature/BinaryColumn.java
+++ b/common/api/src/main/java/com/dfsek/terra/api/structure/feature/BinaryColumn.java
@@ -7,11 +7,10 @@
 
 package com.dfsek.terra.api.structure.feature;
 
-import com.dfsek.terra.api.util.Range;
-
-import java.util.function.BinaryOperator;
 import java.util.function.IntConsumer;
 
+import com.dfsek.terra.api.util.Range;
+
 
 /**
  * A column of binary data
@@ -97,7 +96,7 @@ public class BinaryColumn {
         return bool(that, Boolean::logicalXor);
     }
     
-    private BinaryColumn bool(BinaryColumn that, BinaryOperator<Boolean> operator) {
+    private BinaryColumn bool(BinaryColumn that, BooleanBinaryOperator operator) {
         int smallMinY = Math.min(this.minY, that.minY);
         int bigMaxY = Math.max(this.maxY, that.maxY);
     
@@ -120,4 +119,8 @@ public class BinaryColumn {
     
         return next;
     }
+    
+    private interface BooleanBinaryOperator {
+        boolean apply(boolean a, boolean b);
+    }
 }