diff --git a/libretro-common/streams/trans_stream_zlib.c b/libretro-common/streams/trans_stream_zlib.c
index 14da4fb3f1..03921e7127 100644
--- a/libretro-common/streams/trans_stream_zlib.c
+++ b/libretro-common/streams/trans_stream_zlib.c
@@ -117,10 +117,10 @@ static void zlib_inflate_stream_free(void *data)
 
 static bool zlib_deflate_define(void *data, const char *prop, uint32_t val)
 {
+   struct zlib_trans_stream *z = (struct zlib_trans_stream*)data;
    if (!data)
       return false;
 
-   struct zlib_trans_stream *z = (struct zlib_trans_stream *) data;
    if (string_is_equal(prop, "level"))
       z->level = (int) val;
    else if (string_is_equal(prop, "window_bits"))
@@ -133,10 +133,10 @@ static bool zlib_deflate_define(void *data, const char *prop, uint32_t val)
 
 static bool zlib_inflate_define(void *data, const char *prop, uint32_t val)
 {
+   struct zlib_trans_stream *z = (struct zlib_trans_stream*)data;
    if (!data)
       return false;
 
-   struct zlib_trans_stream *z = (struct zlib_trans_stream *) data;
    if (string_is_equal(prop, "window_bits"))
    {
       z->window_bits = (int) val;