diff --git a/tests/fuzzer.c b/tests/fuzzer.c
index d413be040..47d0e012a 100644
--- a/tests/fuzzer.c
+++ b/tests/fuzzer.c
@@ -492,7 +492,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
     DISPLAYLEVEL(3, "test%3d: superblock uncompressable data, too many nocompress superblocks : ", testNb++)
     {
         ZSTD_CCtx* cctx = ZSTD_createCCtx();
-        BYTE* src = CNBuffer; BYTE* dst = compressedBuffer;
+        BYTE* src = (BYTE*)CNBuffer; BYTE* dst = (BYTE*)compressedBuffer;
         size_t srcSize = 321656; size_t dstCapacity = ZSTD_compressBound(srcSize);
 
         /* This is the number of bytes to stream before ending. This value