diff --git a/libavcodec/aarch64/neontest.c b/libavcodec/aarch64/neontest.c
index 6e41f3736e..b1f1a6d200 100644
--- a/libavcodec/aarch64/neontest.c
+++ b/libavcodec/aarch64/neontest.c
@@ -23,7 +23,7 @@
 #include "libavutil/aarch64/neontest.h"
 
 wrap(avcodec_open2(AVCodecContext *avctx,
-                   AVCodec *codec,
+                   const AVCodec *codec,
                    AVDictionary **options))
 {
     testneonclobbers(avcodec_open2, avctx, codec, options);
diff --git a/libavcodec/arm/neontest.c b/libavcodec/arm/neontest.c
index a3b5b8e2e3..a81d14dcbf 100644
--- a/libavcodec/arm/neontest.c
+++ b/libavcodec/arm/neontest.c
@@ -23,7 +23,7 @@
 #include "libavutil/arm/neontest.h"
 
 wrap(avcodec_open2(AVCodecContext *avctx,
-                   AVCodec *codec,
+                   const AVCodec *codec,
                    AVDictionary **options))
 {
     testneonclobbers(avcodec_open2, avctx, codec, options);