diff --git a/libavcodec/armv4l/mpegvideo_arm.c b/libavcodec/armv4l/mpegvideo_arm.c
index a3fa8b726c731a78136f765877191c44d974edd9..ea1693531db8781c20b038ff5e88c540858de6b0 100644
--- a/libavcodec/armv4l/mpegvideo_arm.c
+++ b/libavcodec/armv4l/mpegvideo_arm.c
@@ -44,12 +44,12 @@ void MPV_common_init_armv4l(MpegEncContext *s)
     int i;
     const int idct_algo= s->avctx->idct_algo;
 
-    ff_put_pixels_clamped = s->avctx->dsp.put_pixels_clamped;
-    ff_add_pixels_clamped = s->avctx->dsp.put_pixels_clamped;
+    ff_put_pixels_clamped = s->dsp.put_pixels_clamped;
+    ff_add_pixels_clamped = s->dsp.put_pixels_clamped;
 
     if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_ARM){
         s->idct_put= arm_idct_put;
         s->idct_add= arm_idct_add;
-        s->idct_permutation_type= FF_NO_IDCT_PERM;
+        s->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;/* FF_NO_IDCT_PERM */
     }
 }