diff --git a/libavformat/utils.c b/libavformat/utils.c
index bd02da6d41..8e5ec48154 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -503,7 +503,7 @@ int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
     }
 
     /* rewind. reuse probe buffer to avoid seeking */
-    ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
+    ret = ffio_rewind_with_probe_data(pb, &buf, buf_offset);
 
     return ret < 0 ? ret : score;
 }