diff --git a/Installation/cmake/modules/CGALHelpers.cmake b/Installation/cmake/modules/CGALHelpers.cmake
index 4c91469324f..936ef591f03 100644
--- a/Installation/cmake/modules/CGALHelpers.cmake
+++ b/Installation/cmake/modules/CGALHelpers.cmake
@@ -54,7 +54,7 @@ function(CGAL_handle_subdirectories subdir_name plural_name)
 
   else()
 
-    file(GLOB list "*")
+    file(GLOB list "${subdir_name}/*")
 
   endif()