diff --git a/app/views/desktop/co_author_relations/index.html.erb b/app/views/desktop/co_author_relations/index.html.erb
index 106418ac..0b91d143 100644
--- a/app/views/desktop/co_author_relations/index.html.erb
+++ b/app/views/desktop/co_author_relations/index.html.erb
@@ -1,6 +1,6 @@
 <h1>Listing co_author_relations</h1>
 
-<%= submit_tag "Back", class: "bt-cancel fn_btn hh2 thmc2 thmtxt" %>
+<%= submit_tag "Back", :type => "button", class: "bt-cancel fn_btn hh2 thmc2 thmtxt" %>
 <%= render 'form' %>
 
 <table id="co_author_relation_table">
diff --git a/app/views/desktop/co_authors/_form.html.erb b/app/views/desktop/co_authors/_form.html.erb
index b087be95..2d8aa2d9 100644
--- a/app/views/desktop/co_authors/_form.html.erb
+++ b/app/views/desktop/co_authors/_form.html.erb
@@ -1,6 +1,6 @@
 <div class="fn_g hp">
   <%= f.submit "Save", name: "commit", value: "Save", class: "fn_btn hh2 thmc2 thmtxt" %>
-  <%= submit_tag "Cancel", class: "bt-cancel fn_btn hh2 thmc2 thmtxt" %>
+  <%= submit_tag "Cancel", :type => "button", class: "bt-cancel fn_btn hh2 thmc2 thmtxt" %>
 </div>
 
 <div></div>