diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index d012c92a48..a2d64d1977 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -513,7 +513,7 @@ static av_cold int X264_init(AVCodecContext *avctx)
 
     x4->params.b_interlaced   = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
 
-//    x4->params.b_open_gop     = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
+    x4->params.b_open_gop     = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
 
     x4->params.i_slice_count  = avctx->slices;