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-rw-r--r--libmpdemux/demux_mkv.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libmpdemux/demux_mkv.c b/libmpdemux/demux_mkv.c
index ff4e3aa183..5d0290bfb3 100644
--- a/libmpdemux/demux_mkv.c
+++ b/libmpdemux/demux_mkv.c
@@ -1533,7 +1533,8 @@ demux_mkv_read_attachments (demuxer_t *demuxer)
"[mkv] Attachment: %s, %s, %u bytes\n",
name, mime, data_size);
#ifdef USE_ASS
- if (extract_embedded_fonts && name && data && data_size &&
+ if (ass_library &&
+ extract_embedded_fonts && name && data && data_size &&
mime && (strcmp(mime, "application/x-truetype-font") == 0 ||
strcmp(mime, "application/x-font") == 0))
ass_add_font(ass_library, name, data, data_size);