diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index 8745f209d3..88256ef475 100644
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -37,6 +37,7 @@
 #define XING_FLAG_FRAMES 0x01
 #define XING_FLAG_SIZE   0x02
 #define XING_FLAG_TOC    0x04
+#define XING_FLAC_QSCALE 0x08
 
 #define XING_TOC_COUNT 100
 
@@ -168,8 +169,8 @@ static void mp3_parse_info_tag(AVFormatContext *s, AVStream *st,
                                        (AVRational){spf, c->sample_rate},
                                        st->time_base));
     /* VBR quality */
-    if(v & 8)
-        avio_skip(s->pb, 4);
+    if (v & XING_FLAC_QSCALE)
+        avio_rb32(s->pb);
 
     /* Encoder short version string */
     memset(version, 0, sizeof(version));