diff --git a/glucose/glitz_glucose.h b/glucose/glitz_glucose.h
index 26540b727..addb15259 100644
--- a/glucose/glitz_glucose.h
+++ b/glucose/glitz_glucose.h
@@ -150,6 +150,9 @@ glitz_glucose_make_current (void               *abstract_drawable,
 extern glitz_status_t
 glitz_glucose_make_current_read (void *abstract_surface);
 
+extern void
+glitz_glucose_screen_destroy (glitz_glucose_screen_info_t *screen_info);
+
 extern void
 glitz_glucose_destroy (void *abstract_drawable);