diff --git a/cores/libretro-ffmpeg/packet_buffer.c b/cores/libretro-ffmpeg/packet_buffer.c
index b852631b5c..da4cd4654c 100644
--- a/cores/libretro-ffmpeg/packet_buffer.c
+++ b/cores/libretro-ffmpeg/packet_buffer.c
@@ -16,7 +16,7 @@ struct packet_buffer
 
 packet_buffer_t *packet_buffer_create()
 {
-   packet_buffer_t *b = malloc(sizeof(packet_buffer_t));
+   packet_buffer_t *b = (packet_buffer_t*)malloc(sizeof(packet_buffer_t));
    if (!b)
       return NULL;
 
diff --git a/cores/libretro-ffmpeg/video_buffer.c b/cores/libretro-ffmpeg/video_buffer.c
index 72aeeaf560..d59354ae09 100644
--- a/cores/libretro-ffmpeg/video_buffer.c
+++ b/cores/libretro-ffmpeg/video_buffer.c
@@ -25,14 +25,14 @@ struct video_buffer
 
 video_buffer_t *video_buffer_create(size_t capacity, int frame_size, int width, int height)
 {
-   video_buffer_t *b = malloc(sizeof(video_buffer_t));
+   video_buffer_t *b = (video_buffer_t*)malloc(sizeof(video_buffer_t));
    if (!b)
       return NULL;
 
    memset(b, 0, sizeof(video_buffer_t));
    b->capacity = capacity;
 
-   b->status = malloc(sizeof(enum kbStatus) * capacity);
+   b->status = (enum kbStatus*)malloc(sizeof(enum kbStatus) * capacity);
    if (!b->status)
       goto fail;
    for (int i = 0; i < capacity; i++)
@@ -44,21 +44,21 @@ video_buffer_t *video_buffer_create(size_t capacity, int frame_size, int width,
    if (!b->lock || !b->open_cond || !b->finished_cond)
       goto fail;
 
-   b->buffer = malloc(sizeof(video_decoder_context_t) * capacity);
+   b->buffer = (video_decoder_context_t*)malloc(sizeof(video_decoder_context_t) * capacity);
    if (!b->buffer)
       goto fail;
 
    for (int i = 0; i < capacity; i++)
    {
-      b->buffer[i].index = i;
-      b->buffer[i].pts = 0;
-      b->buffer[i].sws = sws_alloc_context();
-      b->buffer[i].source = av_frame_alloc();
+      b->buffer[i].index     = i;
+      b->buffer[i].pts       = 0;
+      b->buffer[i].sws       = sws_alloc_context();
+      b->buffer[i].source    = av_frame_alloc();
 #if LIBAVUTIL_VERSION_MAJOR > 55
       b->buffer[i].hw_source = av_frame_alloc();
 #endif
-      b->buffer[i].target = av_frame_alloc();
-      b->buffer[i].frame_buf = av_malloc(frame_size);
+      b->buffer[i].target    = av_frame_alloc();
+      b->buffer[i].frame_buf = (uint8_t*)av_malloc(frame_size);
 
       avpicture_fill((AVPicture*)b->buffer[i].target, (const uint8_t*)b->buffer[i].frame_buf,
             PIX_FMT_RGB32, width, height);
diff --git a/libretro-common/rthreads/tpool.c b/libretro-common/rthreads/tpool.c
index db3529222f..4856492155 100644
--- a/libretro-common/rthreads/tpool.c
+++ b/libretro-common/rthreads/tpool.c
@@ -101,8 +101,8 @@ static tpool_work_t *tpool_work_get(tpool_t *tp)
 
 static void tpool_worker(void *arg)
 {
-   tpool_t      *tp = arg;
-   tpool_work_t *work;
+   tpool_work_t *work = NULL;
+   tpool_t      *tp   = (tpool_t*)arg;
 
    while (true)
    {