diff --git a/libavcodec/rasc.c b/libavcodec/rasc.c
index 6e32c1540e55ac7b043ec690b926d062f48e690f..21fc43f325c761a8f0fec0cd5b87d9baaa75f9e4 100644
--- a/libavcodec/rasc.c
+++ b/libavcodec/rasc.c
@@ -723,12 +723,12 @@ static int decode_frame(AVCodecContext *avctx,
             return ret;
     }
 
-    if ((ret = ff_get_buffer(avctx, s->frame, 0)) < 0)
-        return ret;
-
     if (!s->frame2->data[0] || !s->frame1->data[0])
         return AVERROR_INVALIDDATA;
 
+    if ((ret = ff_get_buffer(avctx, s->frame, 0)) < 0)
+        return ret;
+
     copy_plane(avctx, s->frame2, s->frame);
     if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
         memcpy(s->frame->data[1], s->frame2->data[1], 1024);