diff --git a/app/views/steps/_step.html.erb b/app/views/steps/_step.html.erb
index bd100d137..c3b61140d 100644
--- a/app/views/steps/_step.html.erb
+++ b/app/views/steps/_step.html.erb
@@ -27,24 +27,25 @@
         </a>
       </div>
       <div class="panel-options pull-right">
-        <% if step.completed? %>
-          <button data-action="uncomplete-step"
-                  data-link-url="<%= toggle_step_state_step_path(step)%>"
-                  class="btn btn-secondary"
-                  <%= 'disabled' if !can_complete_or_checkbox_step?(@protocol) || preview %>>
-            <span class="fas fa-times"></span>
-            <%= t("protocols.steps.options.uncomplete_title") %>
-          </button>
-        <% else %>
-          <button data-action="complete-step"
-                  data-link-url="<%= toggle_step_state_step_path(step)%>"
-                  class="btn btn-secondary"
-                  <%= 'disabled' if !can_complete_or_checkbox_step?(@protocol) || preview %>>
-            <span class="fas fa-check"></span>
-            <%= t("protocols.steps.options.complete_title") %>
-          </button>
+        <% unless preview %>
+          <% if step.completed? %>
+            <button data-action="uncomplete-step"
+                    data-link-url="<%= toggle_step_state_step_path(step)%>"
+                    class="btn btn-secondary"
+                    <%= 'disabled' if !can_complete_or_checkbox_step?(@protocol) || preview %>>
+              <span class="fas fa-times"></span>
+              <%= t("protocols.steps.options.uncomplete_title") %>
+            </button>
+          <% else %>
+            <button data-action="complete-step"
+                    data-link-url="<%= toggle_step_state_step_path(step)%>"
+                    class="btn btn-secondary"
+                    <%= 'disabled' if !can_complete_or_checkbox_step?(@protocol) || preview %>>
+              <span class="fas fa-check"></span>
+              <%= t("protocols.steps.options.complete_title") %>
+            </button>
+          <% end %>
         <% end %>
-
         <% if (can_manage_protocol_in_module?(@protocol) || can_manage_protocol_in_repository?(@protocol)) && !(preview) %>
           <%= link_to(move_up_step_path(step),
                       class: 'btn btn-light icon-btn',