diff --git a/k4Gen/CMakeLists.txt b/k4Gen/CMakeLists.txt
index ff8572b..c0b5e1e 100644
--- a/k4Gen/CMakeLists.txt
+++ b/k4Gen/CMakeLists.txt
@@ -12,7 +12,7 @@ gaudi_add_module(k4Gen
                  SOURCES ${k4gen_plugin_sources}
                  LINK Gaudi::GaudiKernel ${HEPMC3_LIBRARIES} Gaudi::GaudiAlgLib k4FWCore::k4FWCore ${HEPPDT_LIBRARIES} ${EVTGEN_LIBRARIES} EDM4HEP::edm4hep EDM4HEP::edm4hepDict)
 
-target_include_directories(k4Gen PUBLIC ${PYTHIA8_INCLUDE_DIRS} ${HEPMC3_INCLUDE_DIRS}
+target_include_directories(k4Gen PUBLIC ${PYTHIA8_INCLUDE_DIRS} ${HEPMC3_INCLUDE_DIR} ${HEPPDT_ICNCLUDE_DIR}
   $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)