diff --git a/Installation/test/Installation/link_to_CGAL_Qt3.cpp b/Installation/test/Installation/link_to_CGAL_Qt3.cpp
index b9301da05e4..021b48eb935 100644
--- a/Installation/test/Installation/link_to_CGAL_Qt3.cpp
+++ b/Installation/test/Installation/link_to_CGAL_Qt3.cpp
@@ -1,6 +1,7 @@
 // Use something defined not in headers but in the CGAL library to test that is was indeed properly built and linked to,
 
 #include <CGAL/IO/pixmaps/alpha_shape.xpm>
+#include <CGAL/auto_link/CGALQt.h>
 
 int main()
 {