diff --git a/docs/user/book.dox b/docs/user/book.dox
index 86386e92d4..72f751da10 100644
--- a/docs/user/book.dox
+++ b/docs/user/book.dox
@@ -554,6 +554,8 @@ snooze_until(time - Latency(), B_SYSTEM_TIMEBASE);
 		formats.
 
 
+	\defgroup libtranslation (libtranslation.so)
+
 	\defgroup libbe (libbe.so)