diff --git a/types/jest-image-snapshot/index.d.ts b/types/jest-image-snapshot/index.d.ts
index 007d66f1e9..c516c35a22 100644
--- a/types/jest-image-snapshot/index.d.ts
+++ b/types/jest-image-snapshot/index.d.ts
@@ -36,12 +36,14 @@ export interface MatchImageSnapshotOptions {
      * it is called with an object containing testPath, currentTestName, counter and defaultIdentifier as its first
      * argument. The function must return an identifier to use for the snapshot.
      */
-    customSnapshotIdentifier?: (parameters: {
-        testPath: string;
-        currentTestName: string;
-        counter: number;
-        defaultIdentifier: string;
-    }) => string | string;
+    customSnapshotIdentifier?:
+        | ((parameters: {
+              testPath: string;
+              currentTestName: string;
+              counter: number;
+              defaultIdentifier: string;
+          }) => string)
+        | string;
     /**
      * Changes diff image layout direction, default is horizontal.
      */
diff --git a/types/jest-image-snapshot/jest-image-snapshot-tests.ts b/types/jest-image-snapshot/jest-image-snapshot-tests.ts
index 07f6debed7..1c8401e07e 100644
--- a/types/jest-image-snapshot/jest-image-snapshot-tests.ts
+++ b/types/jest-image-snapshot/jest-image-snapshot-tests.ts
@@ -1,5 +1,5 @@
 // Typescript Version: 2.3
-import { toMatchImageSnapshot, configureToMatchImageSnapshot, MatchImageSnapshotOptions } from 'jest-image-snapshot';
+import { configureToMatchImageSnapshot, MatchImageSnapshotOptions, toMatchImageSnapshot } from 'jest-image-snapshot';
 
 it('should be able to use toMatchImageSnapshot in a test', () => {
     expect.extend({ toMatchImageSnapshot });
@@ -40,3 +40,19 @@ it('Should be able to use configuration directly in toMatchImageSnapshot', () =>
 
     expect('Me').toMatchImageSnapshot(options);
 });
+
+it('Should be able to use string as customSnapshotIdentifier', () => {
+    const options: MatchImageSnapshotOptions = {
+        customSnapshotIdentifier: 'string identifier',
+    };
+
+    expect('Me').toMatchImageSnapshot(options);
+});
+
+it('Should be able to use callback as customSnapshotIdentifier', () => {
+    const options: MatchImageSnapshotOptions = {
+        customSnapshotIdentifier: () => 'string identifier',
+    };
+
+    expect('Me').toMatchImageSnapshot(options);
+});