diff --git a/arts/kde/CMakeLists.txt b/arts/kde/CMakeLists.txt
index 3b58525..091be35 100644
--- a/arts/kde/CMakeLists.txt
+++ b/arts/kde/CMakeLists.txt
@@ -27,11 +27,6 @@ link_directories(
   ${ARTS_LIBRARY_DIRS}
 )
 
-# pkg-config stripping -I/usr/include
-if( NOT ARTS_INCLUDE_DIRS )
-  set( ARTS_INCLUDE_DIRS "/usr/include" )
-endif()
-
 
 ##### headers ###################################
 
@@ -58,7 +53,7 @@ set( ${target}_SRCS
 add_custom_command(
   OUTPUT artskde.cc artskde.h
   COMMAND ${ARTS_MCOPIDL_EXECUTABLE}
-    -I${ARTS_INCLUDE_DIRS} ${CMAKE_CURRENT_SOURCE_DIR}/artskde.idl
+    -I${ARTS_INCLUDEDIR} ${CMAKE_CURRENT_SOURCE_DIR}/artskde.idl
   DEPENDS artskde.idl
 )