diff --git a/src/video_compress/libavcodec.cpp b/src/video_compress/libavcodec.cpp
index 15bda30e8..e99ed09a8 100644
--- a/src/video_compress/libavcodec.cpp
+++ b/src/video_compress/libavcodec.cpp
@@ -1357,7 +1357,7 @@ static shared_ptr<video_frame> libavcodec_compress_tile(struct module *mod, shar
         out->tiles[0].data_len = 0;
         if (libav_codec_has_extradata(s->out_codec)) { // we need to store extradata for HuffYUV/FFV1 in the beginning
                 out->tiles[0].data_len += sizeof(uint32_t) + s->codec_ctx->extradata_size;
-                *(uint32_t *) out->tiles[0].data = s->codec_ctx->extradata_size;
+                *(uint32_t *)(void *) out->tiles[0].data = s->codec_ctx->extradata_size;
                 memcpy(out->tiles[0].data + sizeof(uint32_t), s->codec_ctx->extradata, s->codec_ctx->extradata_size);
         }
 
diff --git a/src/video_decompress/libavcodec.c b/src/video_decompress/libavcodec.c
index 90b947f2f..82d72cf15 100644
--- a/src/video_decompress/libavcodec.c
+++ b/src/video_decompress/libavcodec.c
@@ -544,7 +544,7 @@ static decompress_status libavcodec_decompress(void *state, unsigned char *dst,
         decompress_status res = DECODER_NO_FRAME;
 
         if (libav_codec_has_extradata(s->desc.color_spec)) {
-                int extradata_size = *(uint32_t *) src;
+                int extradata_size = *(uint32_t *)(void *) src;
                 if (s->codec_ctx == NULL) {
                         configure_with(s, s->desc, src + sizeof(uint32_t), extradata_size);
                 }