diff --git a/gnat/spawn_glib.gpr b/gnat/spawn_glib.gpr
index b4773c1..1c5cbd4 100644
--- a/gnat/spawn_glib.gpr
+++ b/gnat/spawn_glib.gpr
@@ -60,6 +60,7 @@ library project Spawn_Glib is
 
       when "Windows_NT" =>
          for Excluded_Source_Files use Common_Excluded;
+         for Library_Options use ("-lglib-2.0");
    end case;
 
    Ada_Switches := ();