diff --git a/app/javascript/mastodon/components/not_signed_in_indicator.tsx b/app/javascript/mastodon/components/not_signed_in_indicator.tsx
index 7a71f6539..ce94c5d87 100644
--- a/app/javascript/mastodon/components/not_signed_in_indicator.tsx
+++ b/app/javascript/mastodon/components/not_signed_in_indicator.tsx
@@ -7,7 +7,7 @@ export const NotSignedInIndicator: React.FC = () => (
     <div className='empty-column-indicator'>
       <FormattedMessage
         id='not_signed_in_indicator.not_signed_in'
-        defaultMessage='You need to sign in to access this resource.'
+        defaultMessage='You need to login to access this resource.'
       />
     </div>
   </div>
diff --git a/app/javascript/mastodon/features/interaction_modal/index.jsx b/app/javascript/mastodon/features/interaction_modal/index.jsx
index f3db2c78d..d9eff63cb 100644
--- a/app/javascript/mastodon/features/interaction_modal/index.jsx
+++ b/app/javascript/mastodon/features/interaction_modal/index.jsx
@@ -143,7 +143,7 @@ class InteractionModal extends React.PureComponent {
         <div className='interaction-modal__choices'>
           <div className='interaction-modal__choices__choice'>
             <h3><FormattedMessage id='interaction_modal.on_this_server' defaultMessage='On this server' /></h3>
-            <a href='/auth/sign_in' className='button button--block'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Sign in' /></a>
+            <a href='/auth/sign_in' className='button button--block'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Login' /></a>
             {signupButton}
           </div>
 
diff --git a/app/javascript/mastodon/features/ui/components/header.jsx b/app/javascript/mastodon/features/ui/components/header.jsx
index af18ac331..6419dbc50 100644
--- a/app/javascript/mastodon/features/ui/components/header.jsx
+++ b/app/javascript/mastodon/features/ui/components/header.jsx
@@ -51,13 +51,13 @@ class Header extends React.PureComponent {
 
       if (registrationsOpen) {
         signupButton = (
-          <a href='/auth/sign_up' className='button button-tertiary'>
+          <a href='/auth/sign_up' className='button'>
             <FormattedMessage id='sign_in_banner.create_account' defaultMessage='Create account' />
           </a>
         );
       } else {
         signupButton = (
-          <button className='button button-tertiary' onClick={openClosedRegistrationsModal}>
+          <button className='button' onClick={openClosedRegistrationsModal}>
             <FormattedMessage id='sign_in_banner.create_account' defaultMessage='Create account' />
           </button>
         );
@@ -65,8 +65,8 @@ class Header extends React.PureComponent {
 
       content = (
         <>
-          <a href='/auth/sign_in' className='button'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Sign in' /></a>
           {signupButton}
+          <a href='/auth/sign_in' className='button button-tertiary'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Login' /></a>
         </>
       );
     }
diff --git a/app/javascript/mastodon/features/ui/components/sign_in_banner.jsx b/app/javascript/mastodon/features/ui/components/sign_in_banner.jsx
index 86fcc11b5..39f0c71c3 100644
--- a/app/javascript/mastodon/features/ui/components/sign_in_banner.jsx
+++ b/app/javascript/mastodon/features/ui/components/sign_in_banner.jsx
@@ -16,13 +16,13 @@ const SignInBanner = () => {
 
   if (registrationsOpen) {
     signupButton = (
-      <a href='/auth/sign_up' className='button button--block button-tertiary'>
+      <a href='/auth/sign_up' className='button button--block'>
         <FormattedMessage id='sign_in_banner.create_account' defaultMessage='Create account' />
       </a>
     );
   } else {
     signupButton = (
-      <button className='button button--block button-tertiary' onClick={openClosedRegistrationsModal}>
+      <button className='button button--block' onClick={openClosedRegistrationsModal}>
         <FormattedMessage id='sign_in_banner.create_account' defaultMessage='Create account' />
       </button>
     );
@@ -30,9 +30,9 @@ const SignInBanner = () => {
 
   return (
     <div className='sign-in-banner'>
-      <p><FormattedMessage id='sign_in_banner.text' defaultMessage='Sign in to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.' /></p>
-      <a href='/auth/sign_in' className='button button--block'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Sign in' /></a>
+      <p><FormattedMessage id='sign_in_banner.text' defaultMessage='Login to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.' /></p>
       {signupButton}
+      <a href='/auth/sign_in' className='button button--block button-tertiary'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Login' /></a>
     </div>
   );
 };
diff --git a/app/javascript/mastodon/locales/defaultMessages.json b/app/javascript/mastodon/locales/defaultMessages.json
index a735d2ff3..6b1b51702 100644
--- a/app/javascript/mastodon/locales/defaultMessages.json
+++ b/app/javascript/mastodon/locales/defaultMessages.json
@@ -356,7 +356,7 @@
   {
     "descriptors": [
       {
-        "defaultMessage": "You need to sign in to access this resource.",
+        "defaultMessage": "You need to login to access this resource.",
         "id": "not_signed_in_indicator.not_signed_in"
       }
     ],
@@ -2623,7 +2623,7 @@
         "id": "interaction_modal.on_this_server"
       },
       {
-        "defaultMessage": "Sign in",
+        "defaultMessage": "Login",
         "id": "sign_in_banner.sign_in"
       },
       {
@@ -4175,7 +4175,7 @@
         "id": "sign_in_banner.create_account"
       },
       {
-        "defaultMessage": "Sign in",
+        "defaultMessage": "Login",
         "id": "sign_in_banner.sign_in"
       }
     ],
@@ -4374,11 +4374,11 @@
         "id": "sign_in_banner.create_account"
       },
       {
-        "defaultMessage": "Sign in to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.",
+        "defaultMessage": "Login to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.",
         "id": "sign_in_banner.text"
       },
       {
-        "defaultMessage": "Sign in",
+        "defaultMessage": "Login",
         "id": "sign_in_banner.sign_in"
       }
     ],
diff --git a/app/javascript/mastodon/locales/en.json b/app/javascript/mastodon/locales/en.json
index 85040bf5b..a9c9f534f 100644
--- a/app/javascript/mastodon/locales/en.json
+++ b/app/javascript/mastodon/locales/en.json
@@ -391,7 +391,7 @@
   "navigation_bar.public_timeline": "Federated timeline",
   "navigation_bar.search": "Search",
   "navigation_bar.security": "Security",
-  "not_signed_in_indicator.not_signed_in": "You need to sign in to access this resource.",
+  "not_signed_in_indicator.not_signed_in": "You need to login to access this resource.",
   "notification.admin.report": "{name} reported {target}",
   "notification.admin.sign_up": "{name} signed up",
   "notification.favourite": "{name} favourited your post",
@@ -573,8 +573,8 @@
   "server_banner.learn_more": "Learn more",
   "server_banner.server_stats": "Server stats:",
   "sign_in_banner.create_account": "Create account",
-  "sign_in_banner.sign_in": "Sign in",
-  "sign_in_banner.text": "Sign in to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.",
+  "sign_in_banner.sign_in": "Login",
+  "sign_in_banner.text": "Login to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.",
   "status.admin_account": "Open moderation interface for @{name}",
   "status.admin_domain": "Open moderation interface for {domain}",
   "status.admin_status": "Open this post in the moderation interface",
diff --git a/config/locales/devise.en.yml b/config/locales/devise.en.yml
index 458fa6d75..eef821481 100644
--- a/config/locales/devise.en.yml
+++ b/config/locales/devise.en.yml
@@ -13,8 +13,8 @@ en:
       locked: Your account is locked.
       not_found_in_database: Invalid %{authentication_keys} or password.
       pending: Your account is still under review.
-      timeout: Your session expired. Please sign in again to continue.
-      unauthenticated: You need to sign in or sign up before continuing.
+      timeout: Your session expired. Please login again to continue.
+      unauthenticated: You need to login or sign up before continuing.
       unconfirmed: You have to confirm your email address before continuing.
     mailer:
       confirmation_instructions:
@@ -102,7 +102,7 @@ en:
     unlocks:
       send_instructions: You will receive an email with instructions for how to unlock your account in a few minutes. Please check your spam folder if you didn't receive this email.
       send_paranoid_instructions: If your account exists, you will receive an email with instructions for how to unlock it in a few minutes. Please check your spam folder if you didn't receive this email.
-      unlocked: Your account has been unlocked successfully. Please sign in to continue.
+      unlocked: Your account has been unlocked successfully. Please login to continue.
   errors:
     messages:
       already_confirmed: was already confirmed, please try signing in
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 0188519c2..29abec943 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1027,8 +1027,8 @@ en:
       new_confirmation_instructions_sent: You will receive a new e-mail with the confirmation link in a few minutes!
       title: Check your inbox
     sign_in:
-      preamble_html: Sign in with your <strong>%{domain}</strong> credentials. If your account is hosted on a different server, you will not be able to log in here.
-      title: Sign in to %{domain}
+      preamble_html: Login with your <strong>%{domain}</strong> credentials. If your account is hosted on a different server, you will not be able to log in here.
+      title: Login to %{domain}
     sign_up:
       manual_review: Sign-ups on %{domain} go through manual review by our moderators. To help us process your registration, write a bit about yourself and why you want an account on %{domain}.
       preamble: With an account on this Mastodon server, you'll be able to follow any other person on the network, regardless of where their account is hosted.
@@ -1595,7 +1595,7 @@ en:
     show_newer: Show newer
     show_older: Show older
     show_thread: Show thread
-    sign_in_to_participate: Sign in to participate in the conversation
+    sign_in_to_participate: Login to participate in the conversation
     title: '%{name}: "%{quote}"'
     visibilities:
       direct: Direct