diff --git a/en_US.ISO8859-1/books/arch-handbook/Makefile b/en_US.ISO8859-1/books/arch-handbook/Makefile
index 3178825bd8..c9c829547e 100644
--- a/en_US.ISO8859-1/books/arch-handbook/Makefile
+++ b/en_US.ISO8859-1/books/arch-handbook/Makefile
@@ -10,7 +10,7 @@ DOC?= book
 
 FORMATS?= html-split
 
-#HAS_INDEX= true
+HAS_INDEX= true
 
 INSTALL_COMPRESSED?= gz
 INSTALL_ONLY_COMPRESSED?=