diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 0dfb3d7321..ff000e7a79 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -462,7 +462,6 @@ ogg_get_length (AVFormatContext * s)
             s->streams[idx]->duration -= s->streams[idx]->start_time;
     }
 
-    ogg->size = size;
     ogg_restore (s, 0);
 
     return 0;
diff --git a/libavformat/oggdec.h b/libavformat/oggdec.h
index 80ebfeb80d..7d66cd5638 100644
--- a/libavformat/oggdec.h
+++ b/libavformat/oggdec.h
@@ -91,7 +91,6 @@ struct ogg {
     int nstreams;
     int headers;
     int curidx;
-    uint64_t size;
     struct ogg_state *state;
 };