diff --git a/templates/show_params.mako b/templates/show_params.mako
index dde5ea3cad9..f93f50eaa3c 100644
--- a/templates/show_params.mako
+++ b/templates/show_params.mako
@@ -109,7 +109,7 @@
                 %>
                 <tr>
                     ${inputs_recursive_indent( text=label, depth=depth )}
-                    <td>${input.value_to_display_text( param_values[input.name], trans.app ) | h}</td>
+                    <td>${input.value_to_display_text( param_values[input.name] ) | h}</td>
                     <td>${ upgrade_messages.get( input.name, '' ) | h }</td>
                 </tr>
             %endif
diff --git a/templates/webapps/galaxy/workflow/display.mako b/templates/webapps/galaxy/workflow/display.mako
index 7d3726e1ddd..1214185ad17 100644
--- a/templates/webapps/galaxy/workflow/display.mako
+++ b/templates/webapps/galaxy/workflow/display.mako
@@ -64,7 +64,7 @@
                     <i>select at runtime</i>
                 %endif
             %else:
-                ${cgi.escape( param.value_to_display_text( value, app ) or 'Unavailable.' )}
+                ${cgi.escape( param.value_to_display_text( value ) or 'Unavailable.' )}
             %endif
         </div>
         %if hasattr( step, 'upgrade_messages' ) and step.upgrade_messages and param.name in step.upgrade_messages: