diff --git a/src/GEOM_SWIG/CMakeLists.txt b/src/GEOM_SWIG/CMakeLists.txt
index 6e9a9d95c..c956b679d 100644
--- a/src/GEOM_SWIG/CMakeLists.txt
+++ b/src/GEOM_SWIG/CMakeLists.txt
@@ -26,6 +26,7 @@ include_directories(
   ${PROJECT_SOURCE_DIR}/src/GEOM
   ${PROJECT_SOURCE_DIR}/src/GEOMImpl
   ${PROJECT_SOURCE_DIR}/src/GEOM_I
+  ${OpenCASCADE_INCLUDE_DIR}
 )
 
 # --- scripts ---