diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index b96caeb8ce..69e8d1683a 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -1411,6 +1411,7 @@ static av_cold int tiff_end(AVCodecContext *avctx)
 
     ff_lzw_decode_close(&s->lzw);
     av_freep(&s->deinvert_buf);
+    s->deinvert_buf_size = 0;
     av_freep(&s->fax_buffer);
     s->fax_buffer_size = 0;
     return 0;