diff --git a/code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/CMakeLists.txt b/code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/CMakeLists.txt
index 409005a6a..5e7c32d86 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/CMakeLists.txt
+++ b/code/nel/tools/3d/object_viewer_qt/src/plugins/gui_editor/CMakeLists.txt
@@ -1,7 +1,8 @@
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR}
   ${CMAKE_CURRENT_SOURCE_DIR}
   ${LIBXML2_INCLUDE_DIR}
-  ${QT_INCLUDES})
+  ${QT_INCLUDES}
+  ${LUA_INCLUDE_DIR})
 
 FILE(GLOB SRC *.cpp *.h)