diff --git a/kcmkwin/kwinrules/CMakeLists.txt b/kcmkwin/kwinrules/CMakeLists.txt
--- a/kcmkwin/kwinrules/CMakeLists.txt
+++ b/kcmkwin/kwinrules/CMakeLists.txt
@@ -1,5 +1,5 @@
 # KI18N Translation Domain for this library
-add_definitions(-DTRANSLATION_DOMAIN=\"kcmkwinrules\")
+add_definitions(-DTRANSLATION_DOMAIN=\"kcm_kwinrules\")
 add_definitions(-DKCMRULES)
 
 include_directories(../../)