diff --git a/lib/buffer.js b/lib/buffer.js
index cf9e0ca50c3d7e..eff826fd5ab34a 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -268,7 +268,7 @@ function copyImpl(source, target, targetStart, sourceStart, sourceEnd) {
   return _copyActual(source, target, targetStart, sourceStart, sourceEnd);
 }
 
-function _copyActual(source, target, targetStart, sourceStart, sourceEnd, isUint8Copy = false) {
+function _copyActual(source, target, targetStart, sourceStart, sourceEnd) {
   if (sourceEnd - sourceStart > target.byteLength - targetStart)
     sourceEnd = sourceStart + target.byteLength - targetStart;
 
@@ -280,11 +280,7 @@ function _copyActual(source, target, targetStart, sourceStart, sourceEnd, isUint
   if (nb <= 0)
     return 0;
 
-  if (sourceStart === 0 && nb === sourceLen && (isUint8Copy || isUint8Array(target))) {
-    TypedArrayPrototypeSet(target, source, targetStart);
-  } else {
-    _copy(source, target, targetStart, sourceStart, nb);
-  }
+  _copy(source, target, targetStart, sourceStart, nb);
 
   return nb;
 }