diff --git a/DDG4/CMakeLists.txt b/DDG4/CMakeLists.txt
index c5b87029589a90c3c9ef9f4ab2f491fc3490fef2..6affa3857d1c47c3b867233cc31c58c9475bdac0 100644
--- a/DDG4/CMakeLists.txt
+++ b/DDG4/CMakeLists.txt
@@ -13,6 +13,7 @@ include(DD4hep_XML_setup)
 
 #---Includedirs-------------------------------------------------------------------
 include_directories(${CMAKE_SOURCE_DIR}/DDCore/include
+	            ${CMAKE_SOURCE_DIR}/DDSegmentation/include	
                     ${CMAKE_CURRENT_SOURCE_DIR}/include 
                     ${ROOT_INCLUDE_DIR}
                     ${CLHEP_INCLUDE_DIR}