diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index dd31edaf85aaae33527996cecaff0a8d61bbcab0..1af978f21b5b05fd39131d1af24762a1ff92ca2d 100644
--- a/libavcodec/sp5xdec.c
+++ b/libavcodec/sp5xdec.c
@@ -107,7 +107,7 @@ AVCodec ff_sp5x_decoder = {
     sp5x_decode_frame,
     CODEC_CAP_DR1,
     NULL,
-    .max_lowres = 5,
+    .max_lowres = 3,
     .long_name = NULL_IF_CONFIG_SMALL("Sunplus JPEG (SP5X)"),
 };