diff --git a/libavcodec/mdec.c b/libavcodec/mdec.c
index 9053f48710..63bfd4b0b4 100644
--- a/libavcodec/mdec.c
+++ b/libavcodec/mdec.c
@@ -38,7 +38,6 @@ typedef struct MDECContext{
     AVCodecContext *avctx;
     DSPContext dsp;
     AVFrame picture;
-    PutBitContext pb;
     GetBitContext gb;
     ScanTable scantable;
     int version;