diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index 7b16d7364..2904cc1da 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -2032,9 +2032,10 @@ static size_t ZSTD_writeFrameHeader(void* dst, size_t dstCapacity,
 size_t ZSTD_writeLastEmptyBlock(void* dst, size_t dstCapacity)
 {
     if (dstCapacity < ZSTD_blockHeaderSize) return ERROR(dstSize_tooSmall);
-    U32 const cBlockHeader24 = 1 /*lastBlock*/ + (((U32)bt_raw)<<1);  /* 0 size */
-    MEM_writeLE24(dst, cBlockHeader24);
-    return ZSTD_blockHeaderSize;
+    {   U32 const cBlockHeader24 = 1 /*lastBlock*/ + (((U32)bt_raw)<<1);  /* 0 size */
+        MEM_writeLE24(dst, cBlockHeader24);
+        return ZSTD_blockHeaderSize;
+    }
 }