diff --git a/source/build/include/lz4.h b/source/build/include/lz4.h
index 0dfa19e00..cbdc9e4b9 100644
--- a/source/build/include/lz4.h
+++ b/source/build/include/lz4.h
@@ -39,6 +39,8 @@ extern "C" {
 #ifndef LZ4_H_2983827168210
 #define LZ4_H_2983827168210
 
+#define LZ4_VISIBILITY
+
 /* --- Dependency --- */
 #include <stddef.h>   /* size_t */
 
diff --git a/source/build/src/miniz_tdef.c b/source/build/src/miniz_tdef.c
index 3f71dfa80..86c7ba2e0 100644
--- a/source/build/src/miniz_tdef.c
+++ b/source/build/src/miniz_tdef.c
@@ -1484,7 +1484,7 @@ void *tdefl_write_image_to_png_file_in_memory_ex(const void *pImage, int w, int
     for (y = 0; y < h; ++y)
     {
         tdefl_compress_buffer(pComp, &z, 1, TDEFL_NO_FLUSH);
-        tdefl_compress_buffer(pComp, (mz_uint8 *)pImage + (flip ? (h - 1 - y) : y) * bpl, bpl, TDEFL_NO_FLUSH);
+        tdefl_compress_buffer(pComp, (mz_uint8 const *)pImage + (flip ? (h - 1 - y) : y) * bpl, bpl, TDEFL_NO_FLUSH);
     }
     if (tdefl_compress_buffer(pComp, NULL, 0, TDEFL_FINISH) != TDEFL_STATUS_DONE)
     {