diff --git a/Installation/cmake/modules/CGAL_Macros.cmake b/Installation/cmake/modules/CGAL_Macros.cmake
index a552f1e5a43..8b51530e1bc 100644
--- a/Installation/cmake/modules/CGAL_Macros.cmake
+++ b/Installation/cmake/modules/CGAL_Macros.cmake
@@ -194,7 +194,7 @@ if( NOT CGAL_MACROS_FILE_INCLUDED )
 
   macro( use_lib lib usefile)
 
-    if ( ${lib_found} )
+    if ( ${lib}_FOUND )
 
       if ( NOT ${lib}_SETUP ) # avoid double usage