diff --git a/libavcodec/cdgraphics.c b/libavcodec/cdgraphics.c
index 9e3f19a5f77331a9b96517a08971335bb361c39d..6493709aafab15f21838c1129d6ba482c273ba22 100644
--- a/libavcodec/cdgraphics.c
+++ b/libavcodec/cdgraphics.c
@@ -377,6 +377,5 @@ AVCodec ff_cdgraphics_decoder = {
     cdg_decode_end,
     cdg_decode_frame,
     CODEC_CAP_DR1,
-    .max_lowres = 5,
     .long_name = NULL_IF_CONFIG_SMALL("CD Graphics video"),
 };
diff --git a/libavcodec/kgv1dec.c b/libavcodec/kgv1dec.c
index 57684340af8496f50b86b4f3c3e1f4dd37632b91..88c54bf8173b3eea874231fd01d1deb83da59c73 100644
--- a/libavcodec/kgv1dec.c
+++ b/libavcodec/kgv1dec.c
@@ -173,6 +173,5 @@ AVCodec ff_kgv1_decoder = {
     NULL,
     decode_end,
     decode_frame,
-    .max_lowres = 1,
     .long_name = NULL_IF_CONFIG_SMALL("Kega Game Video"),
 };
diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 7477f6746bbf8f900b236f52cf4ca6a91d5ab06f..1268c9e7812c84ec7309ea120a61374360415c42 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -667,6 +667,5 @@ AVCodec ff_png_decoder = {
     decode_frame,
     CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
     NULL,
-    .max_lowres = 5,
     .long_name = NULL_IF_CONFIG_SMALL("PNG image"),
 };
diff --git a/libavcodec/pnmdec.c b/libavcodec/pnmdec.c
index b9f20c0569d80e6aa2e7d365ee8318d95f812886..988ea0c2670afd74c9aa4725c3d119b5414b332b 100644
--- a/libavcodec/pnmdec.c
+++ b/libavcodec/pnmdec.c
@@ -199,7 +199,6 @@ AVCodec ff_pgm_decoder = {
     pnm_decode_frame,
     CODEC_CAP_DR1,
     .pix_fmts  = (const enum PixelFormat[]){PIX_FMT_GRAY8, PIX_FMT_GRAY16BE, PIX_FMT_NONE},
-    .max_lowres = 5,
     .long_name = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
 };
 #endif
@@ -216,7 +215,6 @@ AVCodec ff_pgmyuv_decoder = {
     pnm_decode_frame,
     CODEC_CAP_DR1,
     .pix_fmts  = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
-    .max_lowres = 5,
     .long_name = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
 };
 #endif
@@ -233,7 +231,6 @@ AVCodec ff_ppm_decoder = {
     pnm_decode_frame,
     CODEC_CAP_DR1,
     .pix_fmts  = (const enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGB48BE, PIX_FMT_NONE},
-    .max_lowres = 5,
     .long_name = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
 };
 #endif
@@ -250,7 +247,6 @@ AVCodec ff_pbm_decoder = {
     pnm_decode_frame,
     CODEC_CAP_DR1,
     .pix_fmts  = (const enum PixelFormat[]){PIX_FMT_MONOWHITE, PIX_FMT_NONE},
-    .max_lowres = 5,
     .long_name = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
 };
 #endif
@@ -267,7 +263,6 @@ AVCodec ff_pam_decoder = {
     pnm_decode_frame,
     CODEC_CAP_DR1,
     .pix_fmts  = (const enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, PIX_FMT_NONE},
-    .max_lowres = 5,
     .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),
 };
 #endif
diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index 6726c18ca9353ec15c025641e064eb5a9743f8e5..ae25733530edf37f66883cdc7d287e89e674213f 100644
--- a/libavcodec/sp5xdec.c
+++ b/libavcodec/sp5xdec.c
@@ -104,7 +104,7 @@ 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)"),
 };