1 files changed, 2 insertions, 2 deletions
diff --git a/sub/sd.h b/sub/sd.h
index a3085be864..d3d70bf594 100644
--- a/sub/sd.h
+++ b/sub/sd.h
@@ -38,8 +38,8 @@ struct sd_functions {
     bool (*accepts_packet)(struct sd *sd, double pts); // implicit default if NULL: true
     int (*control)(struct sd *sd, enum sd_ctrl cmd, void *arg);
 
-    void (*get_bitmaps)(struct sd *sd, struct mp_osd_res dim, int format,
-                        double pts, struct sub_bitmaps *res);
+    struct sub_bitmaps *(*get_bitmaps)(struct sd *sd, struct mp_osd_res dim,
+                                       int format, double pts);
     char *(*get_text)(struct sd *sd, double pts);
     struct sd_times (*get_times)(struct sd *sd, double pts);
 };