diff --git a/lib/internal/buffer.js b/lib/internal/buffer.js
index 20b22ad5293..372f20c7bb2 100644
--- a/lib/internal/buffer.js
+++ b/lib/internal/buffer.js
@@ -1036,7 +1036,7 @@ function addBufferPrototypeMethods(proto) {
   proto.hexSlice = hexSlice;
   proto.ucs2Slice = ucs2Slice;
   proto.utf8Slice = utf8Slice;
-  proto.asciiWrite = function(string, offset = 0, length = this.byteLength) {
+  proto.asciiWrite = function asciiWrite(string, offset = 0, length = this.byteLength) {
     if (offset < 0 || offset > this.byteLength) {
       throw new ERR_BUFFER_OUT_OF_BOUNDS('offset');
     }
@@ -1047,7 +1047,7 @@ function addBufferPrototypeMethods(proto) {
   };
   proto.base64Write = base64Write;
   proto.base64urlWrite = base64urlWrite;
-  proto.latin1Write = function(string, offset = 0, length = this.byteLength) {
+  proto.latin1Write = function latin1Write(string, offset = 0, length = this.byteLength) {
     if (offset < 0 || offset > this.byteLength) {
       throw new ERR_BUFFER_OUT_OF_BOUNDS('offset');
     }
@@ -1058,7 +1058,7 @@ function addBufferPrototypeMethods(proto) {
   };
   proto.hexWrite = hexWrite;
   proto.ucs2Write = ucs2Write;
-  proto.utf8Write = function(string, offset = 0, length = this.byteLength) {
+  proto.utf8Write = function utf8Write(string, offset = 0, length = this.byteLength) {
     if (offset < 0 || offset > this.byteLength) {
       throw new ERR_BUFFER_OUT_OF_BOUNDS('offset');
     }