diff --git a/src/constants/ItemIDs.php b/src/constants/ItemIDs.php
index 1082de446..90366d788 100644
--- a/src/constants/ItemIDs.php
+++ b/src/constants/ItemIDs.php
@@ -113,6 +113,7 @@ define("SUGARCANE", 338);
 define("SUGAR_CANE", 338);
 define("SUGAR_CANES", 338);
 define("PAPER", 339);
+define("BOOK", 340);
 define("SLIMEBALL", 341);
 
 define("EGG", 344);
@@ -163,4 +164,4 @@ define("CAMERA", 456);
 define("BEETROOT", 457);
 define("BEETROOT_SEEDS", 458);
 define("BEETROOT_SEED", 458);
-define("BEETROOT_SOUP", 459);
\ No newline at end of file
+define("BEETROOT_SOUP", 459);