diff --git a/app/views/projects/milestones/_form.html.haml b/app/views/projects/milestones/_form.html.haml
index 5cc6b5a173b..e1797e6db2a 100644
--- a/app/views/projects/milestones/_form.html.haml
+++ b/app/views/projects/milestones/_form.html.haml
@@ -21,7 +21,7 @@
 
   .form-actions
     - if @milestone.new_record?
-      = f.submit _('Create milestone'), class: 'btn-create btn qa-milestone-create-button'
+      = f.submit _('Create milestone'), class: 'btn-success btn qa-milestone-create-button'
       = link_to _('Cancel'), project_milestones_path(@project), class: 'btn btn-cancel'
     - else
       = f.submit _('Save changes'), class: 'btn-success btn'
diff --git a/changelogs/unreleased/new-project-milestone-primary-button.yml b/changelogs/unreleased/new-project-milestone-primary-button.yml
new file mode 100644
index 00000000000..ac0305a2e21
--- /dev/null
+++ b/changelogs/unreleased/new-project-milestone-primary-button.yml
@@ -0,0 +1,5 @@
+---
+title: New project milestone primary button
+merge_request: 32355
+author: Lee Tickett
+type: fixed