diff --git a/libavcodec/parser.c b/libavcodec/parser.c
index f4bc00da7d..11c41d6a0a 100644
--- a/libavcodec/parser.c
+++ b/libavcodec/parser.c
@@ -179,6 +179,9 @@ int av_parser_parse2(AVCodecParserContext *s, AVCodecContext *avctx,
         /* offset of the next frame */
         s->next_frame_offset = s->cur_offset + index;
         s->fetch_timestamp   = 1;
+    } else {
+        /* Don't return a pointer to dummy_buf. */
+        *poutbuf = NULL;
     }
     if (index < 0)
         index = 0;