diff --git a/common/src/test/java/biome/BiomeTest.java b/common/src/test/java/biome/BiomeTest.java
index 7f07cbdf7..f905f9a99 100644
--- a/common/src/test/java/biome/BiomeTest.java
+++ b/common/src/test/java/biome/BiomeTest.java
@@ -151,5 +151,10 @@ public class BiomeTest {
         public Set<String> getTags() {
             return tags;
         }
+
+        @Override
+        public String getID() {
+            return null;
+        }
     }
 }