diff --git a/libavcodec/dv.c b/libavcodec/dv.c
index 9e05aa8927..b5e54de5dd 100644
--- a/libavcodec/dv.c
+++ b/libavcodec/dv.c
@@ -162,7 +162,7 @@ static inline void dv_calc_mb_coordinates(const AVDVProfile *d, int chan,
     }
 }
 
-int ff_dv_init_dynamic_tables(DVVideoContext *ctx, const AVDVProfile *d)
+int ff_dv_init_dynamic_tables(DVwork_chunk *work_chunks, const AVDVProfile *d)
 {
     int j, i, c, s, p;
 
@@ -174,8 +174,8 @@ int ff_dv_init_dynamic_tables(DVVideoContext *ctx, const AVDVProfile *d)
                 p += !(j % 3);
                 if (!(DV_PROFILE_IS_1080i50(d) && c != 0 && s == 11) &&
                     !(DV_PROFILE_IS_720p50(d) && s > 9)) {
-                    dv_calc_mb_coordinates(d, c, s, j, &ctx->work_chunks[i].mb_coordinates[0]);
-                    ctx->work_chunks[i++].buf_offset = p;
+                    dv_calc_mb_coordinates(d, c, s, j, &work_chunks[i].mb_coordinates[0]);
+                    work_chunks[i++].buf_offset = p;
                 }
                 p += 5;
             }
diff --git a/libavcodec/dv.h b/libavcodec/dv.h
index 2b082d0140..286b267de2 100644
--- a/libavcodec/dv.h
+++ b/libavcodec/dv.h
@@ -95,7 +95,7 @@ enum dv_pack_type {
  */
 #define DV_MAX_BPM 8
 
-int ff_dv_init_dynamic_tables(DVVideoContext *s, const AVDVProfile *d);
+int ff_dv_init_dynamic_tables(DVwork_chunk *work_chunks, const AVDVProfile *d);
 
 static inline int dv_work_pool_size(const AVDVProfile *d)
 {
diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c
index 87a321dd2e..63b1edd615 100644
--- a/libavcodec/dvdec.c
+++ b/libavcodec/dvdec.c
@@ -624,7 +624,7 @@ static int dvvideo_decode_frame(AVCodecContext *avctx, AVFrame *frame,
     }
 
     if (sys != s->sys) {
-        ret = ff_dv_init_dynamic_tables(s, sys);
+        ret = ff_dv_init_dynamic_tables(s->work_chunks, sys);
         if (ret < 0) {
             av_log(avctx, AV_LOG_ERROR, "Error initializing the work tables.\n");
             return ret;
diff --git a/libavcodec/dvenc.c b/libavcodec/dvenc.c
index 7ae2c0c3d5..35a7f06f24 100644
--- a/libavcodec/dvenc.c
+++ b/libavcodec/dvenc.c
@@ -74,7 +74,7 @@ static av_cold int dvvideo_encode_init(AVCodecContext *avctx)
         return AVERROR(EINVAL);
     }
 
-    ret = ff_dv_init_dynamic_tables(s, s->sys);
+    ret = ff_dv_init_dynamic_tables(s->work_chunks, s->sys);
     if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error initializing work tables.\n");
         return ret;