diff --git a/README.md b/README.md
index e587530..f11a771 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,7 @@ create-index --help
 
 Options:
   --update, -u  Recursively iterates target directories looking for "index.js"
-                files that start with "'create index';\n" (create-index index
+                files that start with "// @create-index\n" (create-index index
                 file). Updates found index files. Does not create new index
                 files.                                [boolean] [default: false]
 
@@ -172,7 +172,7 @@ drwxr-xr-x   2 gajus  staff    68B  6 Jan 15:29 foo
 Given the above directory contents, `./index.js` will be:
 
 ```js
-'create index';
+// @create-index
 
 import bar from './bar';
 import foo from './foo.js';
@@ -187,6 +187,6 @@ When file has the same name as a sibling directory, file `import` takes preceden
 
 Directories that do not have `./index.js` in themselves will be excluded.
 
-When run again, `create-index` will update existing `./index.js` if it starts with `'create index';\n\n`.
+When run again, `create-index` will update existing `./index.js` if it starts with `// @create-index\n\n`.
 
-If `create-index` is executed against a directory that contains `./index.js`, which does not start with `'create index';\n\n`, an error will be thrown.
+If `create-index` is executed against a directory that contains `./index.js`, which does not start with `// @create-index\n\n`, an error will be thrown.
diff --git a/src/bin/create-index.js b/src/bin/create-index.js
index 2ae6ebc..1d6434e 100644
--- a/src/bin/create-index.js
+++ b/src/bin/create-index.js
@@ -8,10 +8,10 @@ import {
 const argv = yargs
   .demand(1)
   .options({
-    'update': {
+    update: {
       alias: 'u',
       default: false,
-      description: 'Recursively iterates target directories looking for "index.js" files that start with "\'create index\';\\n" (create-index index file). Updates found index files. Does not create new index files.',
+      description: 'Recursively iterates target directories looking for "index.js" files that start with "// @create-index\\n" (create-index index file). Updates found index files. Does not create new index files.',
       type: 'boolean'
     }
   })
diff --git a/src/utilities/index.js b/src/utilities/index.js
index ffbc3fa..b38d324 100644
--- a/src/utilities/index.js
+++ b/src/utilities/index.js
@@ -1,4 +1,4 @@
-'create index';
+// @create-index
 
 export createIndexCode from './createIndexCode.js';
 export findIndexFiles from './findIndexFiles.js';
@@ -8,4 +8,3 @@ export sortByDepth from './sortByDepth.js';
 export validateTargetDirectory from './validateTargetDirectory.js';
 export writeIndex from './writeIndex.js';
 export writeIndexCli from './writeIndexCli.js';
-
diff --git a/test/createIndexCode.js b/test/createIndexCode.js
index f5f650d..2d50057 100644
--- a/test/createIndexCode.js
+++ b/test/createIndexCode.js
@@ -11,14 +11,14 @@ describe('createIndexCode()', () => {
     const indexCode = createIndexCode([]);
 
     expect(indexCode).to.equal(codeExample(`
-'create index';
+// @create-index
         `));
   });
   it('describes a single child', () => {
     const indexCode = createIndexCode(['foo']);
 
     expect(indexCode).to.equal(codeExample(`
-'create index';
+// @create-index
 
 export foo from './foo';
         `));
@@ -27,7 +27,7 @@ export foo from './foo';
     const indexCode = createIndexCode(['bar', 'foo']);
 
     expect(indexCode).to.equal(codeExample(`
-'create index';
+// @create-index
 
 export bar from './bar';
 export foo from './foo';
@@ -38,7 +38,7 @@ export foo from './foo';
       const indexCode = createIndexCode(['foo.js']);
 
       expect(indexCode).to.equal(codeExample(`
-'create index';
+// @create-index
 
 export foo from './foo.js';
             `));
@@ -49,7 +49,7 @@ export foo from './foo.js';
       const indexCode = createIndexCode(['foo', 'bar']);
 
       expect(indexCode).to.equal(codeExample(`
-'create index';
+// @create-index
 
 export bar from './bar';
 export foo from './foo';
diff --git a/test/fixtures/write-index/mixed/index.js b/test/fixtures/write-index/mixed/index.js
index 1c830cb..6b4bf06 100644
--- a/test/fixtures/write-index/mixed/index.js
+++ b/test/fixtures/write-index/mixed/index.js
@@ -1,4 +1,4 @@
-'create index';
+// @create-index
 
 export bar from './bar';
 export foo from './foo.js';
diff --git a/test/writeIndex.js b/test/writeIndex.js
index c843507..403a7fe 100644
--- a/test/writeIndex.js
+++ b/test/writeIndex.js
@@ -27,7 +27,7 @@ describe('writeIndex()', () => {
     const indexCode = fs.readFileSync(indexFilePath, 'utf8');
 
     expect(indexCode).to.equal(codeExample(`
-'create index';
+// @create-index
 
 export bar from './bar';
 export foo from './foo.js';