diff --git a/ghost/admin/app/templates/settings/design/change-theme.hbs b/ghost/admin/app/templates/settings/design/change-theme.hbs
index 0ad20f0dd8..76041e5ea1 100644
--- a/ghost/admin/app/templates/settings/design/change-theme.hbs
+++ b/ghost/admin/app/templates/settings/design/change-theme.hbs
@@ -3,7 +3,7 @@
         <h2 class="gh-canvas-title" data-test-screen-title>All themes</h2>
         <section class="view-actions">
             <button type="button" class="mr4 gh-btn" {{on "click" this.toggleAdvanced}}><span>Advanced</span></button>
-            <button type="button" class="gh-btn gh-btn-black" {{on "click" this.themeManagement.upload}}><span>Upload theme</span></button>
+            <button type="button" class="gh-btn gh-btn-primary" {{on "click" this.themeManagement.upload}}><span>Upload theme</span></button>
         </section>
     </GhCanvasHeader>