diff --git a/fs/read_file.ts b/fs/read_file_str.ts
similarity index 83%
rename from fs/read_file.ts
rename to fs/read_file_str.ts
index 50de2fcea884..9f87c933892d 100644
--- a/fs/read_file.ts
+++ b/fs/read_file_str.ts
@@ -10,7 +10,10 @@ export interface ReadOptions {
  * @param filename File to read
  * @param opts Read options
  */
-export function readFileSync(filename: string, opts: ReadOptions = {}): string {
+export function readFileStrSync(
+  filename: string,
+  opts: ReadOptions = {}
+): string {
   const decoder = new TextDecoder(opts.encoding);
   return decoder.decode(Deno.readFileSync(filename));
 }
@@ -21,7 +24,7 @@ export function readFileSync(filename: string, opts: ReadOptions = {}): string {
  * @param filename File to read
  * @param opts Read options
  */
-export async function readFile(
+export async function readFileStr(
   filename: string,
   opts: ReadOptions = {}
 ): Promise<string> {
diff --git a/fs/read_file_test.ts b/fs/read_file_str_test.ts
similarity index 77%
rename from fs/read_file_test.ts
rename to fs/read_file_str_test.ts
index da48b9f647cb..eb529022c5e5 100644
--- a/fs/read_file_test.ts
+++ b/fs/read_file_str_test.ts
@@ -1,20 +1,20 @@
 import { test } from "../testing/mod.ts";
 import { assert } from "../testing/asserts.ts";
-import { readFileSync, readFile } from "./read_file.ts";
+import { readFileStrSync, readFileStr } from "./read_file_str.ts";
 import * as path from "./path/mod.ts";
 
 const testdataDir = path.resolve("fs", "testdata");
 
 test(function testReadFileSync() {
   const jsonFile = path.join(testdataDir, "json_valid_obj.json");
-  const strFile = readFileSync(jsonFile);
+  const strFile = readFileStrSync(jsonFile);
   assert(typeof strFile === "string");
   assert(strFile.length > 0);
 });
 
 test(async function testReadFile() {
   const jsonFile = path.join(testdataDir, "json_valid_obj.json");
-  const strFile = await readFile(jsonFile);
+  const strFile = await readFileStr(jsonFile);
   assert(typeof strFile === "string");
   assert(strFile.length > 0);
 });