diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 713cb33cc4..2d0d5f6bb1 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -1793,11 +1793,11 @@ static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_
     }
 
     if (s->pb->seekable) {
-    ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
-                           mkv->cluster_pos, relative_packet_pos, duration);
-    if (ret < 0)
-        return ret;
-    }
+        ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts,
+                               mkv->cluster_pos, relative_packet_pos, duration);
+        if (ret < 0)
+            return ret;
+        }
     }
 
     mkv->duration = FFMAX(mkv->duration, ts + duration);