diff --git a/lib/buffer.js b/lib/buffer.js
index dd6f7a37abe315..1a9f7caeb5aba9 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -86,6 +86,12 @@ function Buffer(subject, encoding) {
                             poolOffset,
                             poolOffset + this.length);
     poolOffset += this.length;
+
+    // Ensure aligned slices
+    if (poolOffset & 0x7) {
+      poolOffset |= 0x7;
+      poolOffset++;
+    }
   } else {
     alloc(this, this.length);
   }