diff --git a/lib/buffer.js b/lib/buffer.js
index 1fac94d568ffae..8c16f07acebc5b 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -894,11 +894,7 @@ Buffer.prototype.write = function write(string, offset, length, encoding) {
 
   // Buffer#write(string, offset[, length][, encoding])
   } else {
-    if (offset === undefined) {
-      offset = 0;
-    } else {
-      validateInt32(offset, 'offset', 0, this.length);
-    }
+    validateInt32(offset, 'offset', 0, this.length);
 
     const remaining = this.length - offset;