diff --git a/app/templates/components/header.html b/app/templates/components/header.html
index 791d67495..d84c80a5a 100644
--- a/app/templates/components/header.html
+++ b/app/templates/components/header.html
@@ -99,9 +99,10 @@
             <span class="margin-right-2 display-none desktop:display-block">
               If you are an existing partner
             </span>
-            <a class="usa-button login-button login-button--primary desktop:padding-2 padding-1"
-              href="{{ initial_signin_url }}">Sign
-              in with <img src="{{ asset_url('images/logo-login.svg') }}" alt="Login.gov logo">
+            <a id="header_login_button" class="usa-button login-button login-button--primary desktop:padding-2 padding-1"
+              href="{{ initial_signin_url }}">
+              Sign in with
+              <img src="{{ asset_url('images/logo-login.svg') }}" alt="Login.gov logo">
             </a>
           </div>
           {% endif %}
diff --git a/tests/app/main/views/test_index.py b/tests/app/main/views/test_index.py
index 51f1a5c83..2f9ac1727 100644
--- a/tests/app/main/views/test_index.py
+++ b/tests/app/main/views/test_index.py
@@ -22,7 +22,7 @@ def test_non_logged_in_user_can_see_homepage(
 
     # Assert the entire HTML of the button to include the image
     button = page.select_one(
-        "a.usa-button.login-button.login-button--primary.margin-right-2"
+        "#header_login_button"
     )
     assert "Sign in with" in button.text.strip()  # Assert button text
     assert button.find("img")["alt"] == "Login.gov logo"  # Assert image presence