diff --git a/libavcodec/vdpau_vc1.c b/libavcodec/vdpau_vc1.c
index 4e5ee14428..0eacc4477d 100644
--- a/libavcodec/vdpau_vc1.c
+++ b/libavcodec/vdpau_vc1.c
@@ -48,16 +48,16 @@ static int vdpau_vc1_start_frame(AVCodecContext *avctx,
     switch (s->pict_type) {
     case AV_PICTURE_TYPE_B:
         if (s->next_picture_ptr) {
-        ref = ff_vdpau_get_surface_id(s->next_picture.f);
-        assert(ref != VDP_INVALID_HANDLE);
-        info->backward_reference = ref;
+            ref = ff_vdpau_get_surface_id(s->next_picture.f);
+            assert(ref != VDP_INVALID_HANDLE);
+            info->backward_reference = ref;
         }
         /* fall-through */
     case AV_PICTURE_TYPE_P:
         if (s->last_picture_ptr) {
-        ref = ff_vdpau_get_surface_id(s->last_picture.f);
-        assert(ref != VDP_INVALID_HANDLE);
-        info->forward_reference  = ref;
+            ref = ff_vdpau_get_surface_id(s->last_picture.f);
+            assert(ref != VDP_INVALID_HANDLE);
+            info->forward_reference  = ref;
         }
     }