diff --git a/src/tab-manager/__tests__/redirect.test.js b/src/tab-manager/__tests__/redirect.test.js
index 016154dd..e96e4f5a 100644
--- a/src/tab-manager/__tests__/redirect.test.js
+++ b/src/tab-manager/__tests__/redirect.test.js
@@ -44,6 +44,24 @@ describe('Tab Manager Redirect module test suite', () => {
       // Then
       expect(result).toBe(false);
     });
+    describe('Eclipse Chat OAuth', () => {
+      test('From chat.eclipse.org to matrix auth, should return false', () => {
+        // Given
+        mockViewUrl = 'https://chat.eclipse.org';
+        // When
+        const result = redirect.shouldOpenInExternalBrowser(mockView, new URL('https://matrix.eclipse.org/_matrix/client/v3/login/sso/redirect/oidc-oauth2_eclipse?redirectUrl=https%3A%2F%2Fchat.eclipse.org%2F&org.matrix.msc3824.action=login'));
+        // Then
+        expect(result).toBe(false);
+      });
+      test('From matrix.eclipse.org to chat.eclipse.org, should return false', () => {
+        // Given
+        mockViewUrl = 'https://matrix.eclipse.org';
+        // When
+        const result = redirect.shouldOpenInExternalBrowser(mockView, new URL('https://chat.eclipse.org/?loginToken=syl_gLnNMaZoSqyWuCiPkuQr_1dWSvb'));
+        // Then
+        expect(result).toBe(false);
+      });
+    });
     describe('Google OAuth', () => {
       test('From OAuth to Slack, should return false', () => {
         // Given
diff --git a/src/tab-manager/redirect.js b/src/tab-manager/redirect.js
index 3d8c7fb5..393304f2 100644
--- a/src/tab-manager/redirect.js
+++ b/src/tab-manager/redirect.js
@@ -19,6 +19,8 @@ const matchUrls = regexList => (viewUrl, url) =>
   regexList.some(regex => viewUrl.href.match(regex) || url.href.match(regex));
 
 const isOAuth = matchUrls([
+  /^https:\/\/chat.eclipse.org\/\?loginToken.*/, // NOSONAR
+  /^https:\/\/matrix.eclipse.org\/.+\/login\/sso\/.*/, // NOSONAR
   /^https:\/\/(.+\.)?github\.com\/login\/oauth.*/, // NOSONAR
   /^https:\/\/sso\.godaddy\.com\/.*/, // NOSONAR
   /^https:\/\/.+\.google\.com\/o\/oauth2\/.*/, // NOSONAR