--- a/net/minecraft/data/ItemTagsProvider.java
+++ b/net/minecraft/data/ItemTagsProvider.java
@@ -80,7 +80,7 @@
       } else if (p_200439_1_ instanceof Tag. ListEntry) {
          List<Item> list = Lists.newArrayList();
 
-         for(Block block : ((Tag. ListEntry)p_200439_1_).func_200578_a()) {
+         for(Block block : ((Tag. ListEntry<Block>)p_200439_1_).func_200578_a()) {
             Item item = block.func_199767_j();
             if (item == Items.field_190931_a) {
                field_203426_d.warn("Itemless block copied to item tag: {}", (Object)Registry.field_212618_g.func_177774_c(block));
