diff --git a/plugins/kdecorations/CMakeLists.txt b/plugins/kdecorations/CMakeLists.txt
index ccfb099e5..dacf9add6 100644
--- a/plugins/kdecorations/CMakeLists.txt
+++ b/plugins/kdecorations/CMakeLists.txt
@@ -1 +1,2 @@
+add_definitions(-DTRANSLATION_DOMAIN=\"kwin_clients\")
 add_subdirectory( aurorae )