diff --git a/src/main/java/com/jozufozu/flywheel/api/MaterialGroup.java b/src/main/java/com/jozufozu/flywheel/api/MaterialGroup.java
index ba48748df..47908b64e 100644
--- a/src/main/java/com/jozufozu/flywheel/api/MaterialGroup.java
+++ b/src/main/java/com/jozufozu/flywheel/api/MaterialGroup.java
@@ -4,7 +4,7 @@ import com.jozufozu.flywheel.api.struct.StructType;
 
 public interface MaterialGroup {
 	/**
-	 * Get the material as defined by the given {@link MaterialSpec spec}.
+	 * Get the material as defined by the given {@link StructType type}.
 	 *
 	 * @param spec The material you want to create instances with.
 	 * @param <D>  The type representing the per instance data.
diff --git a/src/main/java/com/jozufozu/flywheel/backend/Backend.java b/src/main/java/com/jozufozu/flywheel/backend/Backend.java
index 6485843e3..2be21c97e 100644
--- a/src/main/java/com/jozufozu/flywheel/backend/Backend.java
+++ b/src/main/java/com/jozufozu/flywheel/backend/Backend.java
@@ -16,7 +16,6 @@ import org.lwjgl.opengl.GLCapabilities;
 import com.jozufozu.flywheel.api.FlywheelWorld;
 import com.jozufozu.flywheel.backend.gl.versioned.GlCompat;
 import com.jozufozu.flywheel.api.InstanceData;
-import com.jozufozu.flywheel.api.MaterialSpec;
 import com.jozufozu.flywheel.api.struct.StructType;
 import com.jozufozu.flywheel.config.FlwConfig;
 import com.jozufozu.flywheel.core.shader.spec.ProgramSpec;
diff --git a/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterial.java b/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterial.java
index c9e022800..2593c67bf 100644
--- a/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterial.java
+++ b/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterial.java
@@ -7,7 +7,6 @@ import java.util.function.Supplier;
 import com.jozufozu.flywheel.api.InstanceData;
 import com.jozufozu.flywheel.api.Instancer;
 import com.jozufozu.flywheel.api.Material;
-import com.jozufozu.flywheel.api.MaterialSpec;
 import com.jozufozu.flywheel.api.struct.StructType;
 import com.jozufozu.flywheel.core.model.Model;
 import com.mojang.blaze3d.vertex.PoseStack;
diff --git a/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterialGroup.java b/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterialGroup.java
index dc35e0f06..70e092e75 100644
--- a/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterialGroup.java
+++ b/src/main/java/com/jozufozu/flywheel/backend/instancing/batching/BatchedMaterialGroup.java
@@ -5,7 +5,6 @@ import java.util.Map;
 
 import com.jozufozu.flywheel.api.InstanceData;
 import com.jozufozu.flywheel.api.MaterialGroup;
-import com.jozufozu.flywheel.api.MaterialSpec;
 import com.jozufozu.flywheel.api.struct.StructType;
 import com.mojang.blaze3d.vertex.PoseStack;
 import com.mojang.blaze3d.vertex.VertexConsumer;
@@ -24,7 +23,7 @@ public class BatchedMaterialGroup implements MaterialGroup {
 	}
 
 	/**
-	 * Get the material as defined by the given {@link MaterialSpec spec}.
+	 * Get the material as defined by the given {@link StructType type}.
 	 * @param spec The material you want to create instances with.
 	 * @param <D> The type representing the per instance data.
 	 * @return A
diff --git a/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterial.java b/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterial.java
index 675b8fd90..dc8678362 100644
--- a/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterial.java
+++ b/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterial.java
@@ -9,7 +9,6 @@ import com.jozufozu.flywheel.backend.RenderWork;
 import com.jozufozu.flywheel.api.InstanceData;
 import com.jozufozu.flywheel.api.Instancer;
 import com.jozufozu.flywheel.api.Material;
-import com.jozufozu.flywheel.api.MaterialSpec;
 import com.jozufozu.flywheel.backend.model.ModelPool;
 import com.jozufozu.flywheel.api.struct.StructType;
 import com.jozufozu.flywheel.core.Formats;
diff --git a/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterialGroup.java b/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterialGroup.java
index cff2ed787..ac7f9b36f 100644
--- a/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterialGroup.java
+++ b/src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterialGroup.java
@@ -6,7 +6,6 @@ import java.util.Map;
 
 import com.jozufozu.flywheel.api.InstanceData;
 import com.jozufozu.flywheel.api.MaterialGroup;
-import com.jozufozu.flywheel.api.MaterialSpec;
 import com.jozufozu.flywheel.api.struct.StructType;
 import com.jozufozu.flywheel.core.shader.WorldProgram;
 import com.jozufozu.flywheel.util.TextureBinder;