diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index 349db239..449ae355 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -1,3 +1,3 @@
 ########### install files ###############
 kde4_create_handbook(index.docbook)
-kde4_install_handbook()
+kde4_install_handbook(en)