diff --git a/CMakeLists.txt b/CMakeLists.txt
index 04d2142..294b9a8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,6 @@
-find_package(KDE4 REQUIRED)
-include(KDE4Defaults)
+if(NOT DATA_INSTALL_DIR)
+  find_package(KDE4 REQUIRED)
+  include(KDE4Defaults)
+endif()
 
 add_subdirectory( ksplashx-themes )