diff --git a/src/format.h b/src/format.h
index 691a13f..8585494 100644
--- a/src/format.h
+++ b/src/format.h
@@ -648,7 +648,7 @@ namespace TR {
         }
 
         bool isBlock() const {
-            return type >= TR::Entity::BLOCK_1 && type <= TR::Entity::BLOCK_2;
+            return type >= TR::Entity::BLOCK_1 && type <= TR::Entity::BLOCK_4;
         }
 
         bool isLara() const {