diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index cec36c6c6d1f47104d29d39ca8f2e46994af5a62..d79d484c7ea569437fa5994bf2fbc53675b39db7 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -849,7 +849,7 @@ static void vc1_mc_4mv_chroma(VC1Context *v, int dir)
     }
 
     if (!dir) {
-        if (v->field_mode && (v->cur_field_type != chroma_ref_type) && v->cur_field_type) {
+        if (v->field_mode && (v->cur_field_type != chroma_ref_type) && v->second_field) {
             srcU = s->current_picture.f.data[1];
             srcV = s->current_picture.f.data[2];
         } else {