diff --git a/Surface_mesher/demo/Surface_mesher/CMakeLists.txt b/Surface_mesher/demo/Surface_mesher/CMakeLists.txt
index 9a504d4601a..d2008d55028 100644
--- a/Surface_mesher/demo/Surface_mesher/CMakeLists.txt
+++ b/Surface_mesher/demo/Surface_mesher/CMakeLists.txt
@@ -45,7 +45,7 @@ if ( CGAL_FOUND AND CGAL_Qt5_FOUND AND CGAL_ImageIO_FOUND)
   find_package(QGLViewer )
   find_package(OpenGL    )
   
-  if ( QGLVIEWER_FOUND AND Qt5_FOUND)
+  if ( QGLVIEWER_FOUND AND Qt5_FOUND AND OPENGL_FOUND AND OPENGL_GLU_FOUND )
 
         
     include_directories( ${QGLVIEWER_INCLUDE_DIR} )
@@ -116,9 +116,9 @@ if ( CGAL_FOUND AND CGAL_Qt5_FOUND AND CGAL_ImageIO_FOUND)
     
     target_link_libraries( ${prj} ${QT_LIBRARIES} ${QGLVIEWER_LIBRARIES} ${OPENGL_gl_LIBRARY} ${OPENGL_glu_LIBRARY} ${VTK_LIBS})
     
-  else( QGLVIEWER_FOUND AND Qt5_FOUND)
+  else( QGLVIEWER_FOUND AND Qt5_FOUND AND OPENGL_FOUND AND OPENGL_GLU_FOUND )
     message(STATUS "NOTICE: This demo needs libQGLViewer, and will not be compiled.")
-  endif( QGLVIEWER_FOUND AND Qt5_FOUND)
+  endif( QGLVIEWER_FOUND AND Qt5_FOUND AND OPENGL_FOUND AND OPENGL_GLU_FOUND )
 else(CGAL_FOUND AND CGAL_Qt5_FOUND AND CGAL_ImageIO_FOUND)
   if(RUNNING_CGAL_AUTO_TEST)
     # Just to avoid a warning from CMake if that variable is set on the command line...