diff --git a/package.json b/package.json
index 3ea437a..9841c5e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@kilix/functional-validation",
-    "version": "2.5.0",
+    "version": "2.5.1",
     "description": "Lightweight and customisable validation, built through composition",
     "main": "lib/index.js",
     "scripts": {
diff --git a/src/__tests__/fieldValidators.js b/src/__tests__/fieldValidators.js
index d9a8ea9..d92f6ee 100644
--- a/src/__tests__/fieldValidators.js
+++ b/src/__tests__/fieldValidators.js
@@ -157,26 +157,54 @@ it('testEmailFormat', () => {
     expect(actual).toBe(expected);
 });
 
-it('testLinkedInUrlFormat', () => {
-    let actual = testLinkedInUrlFormat('https://www.linkedin.com/in/url-test/');
-    let expected = null;
-    expect(actual).toBe(expected);
+describe('testLinkedInUrlFormat', () => {
+    it('Should return notLinkedInUrl error message if param is not an url', () => {
+        const actual = testLinkedInUrlFormat('Bob');
+        expect(actual).toBe('notLinkedInUrl');
+    });
+    it('Should return notLinkedInUrl error message if url has not http', () => {
+        const actual = testLinkedInUrlFormat('www.linkedin.com/in/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
+    });
+    it('Should return notLinkedInUrl error message if http is badly written', () => {
+        let actual = testLinkedInUrlFormat('htps://www.linkedin.com/in/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
 
-    actual = testLinkedInUrlFormat('Bob');
-    expected = 'notLinkedInUrl';
-    expect(actual).toBe(expected);
+        actual = testLinkedInUrlFormat('https//www.linkedin.com/in/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
 
-    actual = testLinkedInUrlFormat(null);
-    expected = null;
-    expect(actual).toBe(expected);
+        actual = testLinkedInUrlFormat('https:www.linkedin.com/in/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
+    });
+    it('Should return notLinkedInUrl error message if dns is different of linkedIn dns', () => {
+        let actual = testLinkedInUrlFormat('https://www.linkedinsss.com/in/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
 
-    actual = testLinkedInUrlFormat('https://www.linkedgin.com/in/url-test/');
-    expected = 'notLinkedInUrl';
-    expect(actual).toBe(expected);
+        actual = testLinkedInUrlFormat('https://wwwddd.linkedin.com/in/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
 
-    actual = testLinkedInUrlFormat('https://www.linkedin.com/on/url-test/');
-    expected = 'notLinkedInUrl';
-    expect(actual).toBe(expected);
+        actual = testLinkedInUrlFormat('https://www.linkedin.fr/in/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
+    });
+    it('Should return notLinkedInUrl error message if url has not /in/', () => {
+        const actual = testLinkedInUrlFormat('https://www.linkedin.com/on/url-test/');
+        expect(actual).toBe('notLinkedInUrl');
+    });
+    it('Should return null if url format is correct', () => {
+        // with number in end of the url
+        let actual = testLinkedInUrlFormat('https://www.linkedin.com/in/99erest/');
+        expect(actual).toBe(null);
+
+        // without www.
+        actual = testLinkedInUrlFormat('https://linkedin.com/in/url-test/');
+        expect(actual).toBe(null);
+
+        // with special chars in end of the url
+        actual = testLinkedInUrlFormat(
+            'https://www.linkedin.com/in/%E2?9A=9B&+_#-test-url-716a96119/',
+        );
+        expect(actual).toBe(null);
+    });
 });
 
 describe('checkMaxLength', () => {
diff --git a/src/fieldValidators.js b/src/fieldValidators.js
index 64cb512..29ddf7e 100644
--- a/src/fieldValidators.js
+++ b/src/fieldValidators.js
@@ -86,7 +86,7 @@ const testEmailFormat = (value: ?string) => {
 const testLinkedInUrlFormat = (value: ?string) => {
     if (!value) return null;
 
-    const regexp = /(https?)?:?(\/\/)?(([w]{3}||\w\w)\.)?linkedin.com\/in\//; // eslint-disable-line no-control-regex
+    const regexp = /(https?):(\/\/)(([w]{3}||\w\w)\.)?linkedin.com\/in\/.+/; // eslint-disable-line no-control-regex
     return regexp.test(value.trim()) ? null : 'notLinkedInUrl';
 };