diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f9902dc665..fe9fd5c2fc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -2,6 +2,8 @@
 add_subdirectory( pics )
 add_subdirectory( tests )
 
+macro_optional_find_package(Soprano)
+
 include_directories( ${KDE4_INCLUDE_DIR} ${QT_INCLUDES} ${BLITZ_INCLUDES} )
 if (Soprano_FOUND)
   include_directories( ${SOPRANO_INCLUDE_DIR} )