diff --git a/lib/blockstore/file.js b/lib/blockstore/file.js
index b4ec86204..027333363 100644
--- a/lib/blockstore/file.js
+++ b/lib/blockstore/file.js
@@ -482,7 +482,7 @@ class FileBlockStore extends AbstractBlockStore {
     if (offset + length > blockrecord.length)
       throw new Error('Out-of-bounds read.');
 
-    const data = Buffer.allocUnsafe(length);
+    const data = Buffer.alloc(length);
 
     const fd = await fs.open(filepath, 'r');
     let bytes = 0;