diff --git a/libavcodec/pictordec.c b/libavcodec/pictordec.c
index ad8eae0..5c872c9 100644
--- a/libavcodec/pictordec.c
+++ b/libavcodec/pictordec.c
@@ -133,7 +133,7 @@ static int decode_frame(AVCodecContext *avctx,
         return AVERROR_INVALIDDATA;
     }
 
-    if (bytestream2_peek_byte(&s->g) == 0xFF || bpp == 8) {
+    if (bytestream2_peek_byte(&s->g) == 0xFF || bpp == 1 || bpp == 4 || bpp == 8) {
         bytestream2_skip(&s->g, 2);
         etype = bytestream2_get_le16(&s->g);
         esize = bytestream2_get_le16(&s->g);