4 files changed, 9 insertions, 4 deletions
diff --git a/app/views/projects/wikis/_form.html.haml b/app/views/projects/wikis/_form.html.haml
index fc6b7a33943..adb8d5aaecb 100644
--- a/app/views/projects/wikis/_form.html.haml
+++ b/app/views/projects/wikis/_form.html.haml
@@ -4,6 +4,8 @@
   = form_errors(@page)
 
   = f.hidden_field :title, value: @page.title
+  - if @page.persisted?
+    = f.hidden_field :last_commit_sha, value: @page.last_commit_sha
   .form-group
     .col-sm-12= f.label :format, class: 'control-label-full-width'
     .col-sm-12
diff --git a/app/views/projects/wikis/_sidebar.html.haml b/app/views/projects/wikis/_sidebar.html.haml
index 62873d3aa66..e71ce1f357f 100644
--- a/app/views/projects/wikis/_sidebar.html.haml
+++ b/app/views/projects/wikis/_sidebar.html.haml
@@ -19,6 +19,3 @@
         More Pages
 
 = render 'projects/wikis/new'
-
-:javascript
-  new Sidebar();
diff --git a/app/views/projects/wikis/edit.html.haml b/app/views/projects/wikis/edit.html.haml
index df0ec14eb3b..8fd60216536 100644
--- a/app/views/projects/wikis/edit.html.haml
+++ b/app/views/projects/wikis/edit.html.haml
@@ -1,6 +1,12 @@
 - @content_class = "limit-container-width limit-container-width-sm" unless fluid_layout
 - page_title "Edit", @page.title.capitalize, "Wiki"
 
+- if @conflict
+  .alert.alert-danger
+    Someone edited the page the same time you did. Please check out
+    = link_to "the page", project_wiki_path(@project, @page), target: "_blank"
+    and make sure your changes will not unintentionally remove theirs.
+
 .wiki-page-header.has-sidebar-toggle
   %button.btn.btn-default.sidebar-toggle.js-sidebar-wiki-toggle{ role: "button", type: "button" }
     = icon('angle-double-left')
diff --git a/app/views/projects/wikis/git_access.html.haml b/app/views/projects/wikis/git_access.html.haml
index e64dd6085fe..e740fb93ea4 100644
--- a/app/views/projects/wikis/git_access.html.haml
+++ b/app/views/projects/wikis/git_access.html.haml
@@ -7,7 +7,7 @@
 
   .git-access-header
     Clone repository
-    %strong= @project_wiki.path_with_namespace
+    %strong= @project_wiki.full_path
 
   = render "shared/clone_panel", project: @project_wiki