diff --git a/src/NETGENPlugin/CMakeLists.txt b/src/NETGENPlugin/CMakeLists.txt
index 89232a3..fc59406 100644
--- a/src/NETGENPlugin/CMakeLists.txt
+++ b/src/NETGENPlugin/CMakeLists.txt
@@ -26,6 +26,7 @@ INCLUDE_DIRECTORIES(
   ${OpenCASCADE_INCLUDE_DIR}
   ${NETGEN_INCLUDE_DIRS}
   ${SMESH_INCLUDE_DIRS}
+  ${MEDCOUPLING_INCLUDE_DIRS}
   ${Boost_INCLUDE_DIRS}
   ${OMNIORB_INCLUDE_DIR}
   ${PROJECT_BINARY_DIR}/idl