diff --git a/src/main/java/turniplabs/halplibe/helper/BlockBuilder.java b/src/main/java/turniplabs/halplibe/helper/BlockBuilder.java
index 1cc108d..1180be4 100644
--- a/src/main/java/turniplabs/halplibe/helper/BlockBuilder.java
+++ b/src/main/java/turniplabs/halplibe/helper/BlockBuilder.java
@@ -440,7 +440,7 @@ public BlockBuilder setWestTexture(int x, int y) {
         return blockBuilder;
     }
 
-    public Block build(Block block) {
+    public <T extends Block> T build(T block) {
         if (topTexture != null) {
             block.atlasIndices[Side.TOP.getId()] = Block.texCoordToIndex(topTexture[0], topTexture[1]);
         }