diff --git a/templates/webapps/tool_shed/common/common.mako b/templates/webapps/tool_shed/common/common.mako
index 2d723462f71..5603b65e688 100644
--- a/templates/webapps/tool_shed/common/common.mako
+++ b/templates/webapps/tool_shed/common/common.mako
@@ -15,7 +15,7 @@
             <div>
                 <% selected = o[1] in listify(select.value) or o[2] %>
                 <input type="checkbox" name="${select.name}" value="${escape(o[1])}"
-                ${"refresh_on_change='true'" if select.refresh_on_change else ""}"
+                ${'refresh_on_change="true"' if select.refresh_on_change else ""}"
                 ${"checked" if selected else ""} ${"disabled" if disabled else ""}>
                 ${escape(o[0])}
             </div>
@@ -23,7 +23,7 @@
     %else:
         <select id="${select.field_id}" name="${select.name}"
             ${"multiple" if select.multiple else ""}
-            ${"refresh_on_change='true'" if select.refresh_on_change else ""}">
+            ${'refresh_on_change="true"' if select.refresh_on_change else ""}>
             %for o in select.options:
                 <% selected = o[1] in listify(select.value) or o[2] %>
                 <option value="${escape(o[1])}" ${"selected" if selected else ""}>${escape(o[0])}</option>