diff --git a/common/static/common/templates/components/tabpanel.underscore b/common/static/common/templates/components/tabpanel.underscore
index a4288e6c9c..41e0f2d7b4 100644
--- a/common/static/common/templates/components/tabpanel.underscore
+++ b/common/static/common/templates/components/tabpanel.underscore
@@ -1 +1 @@
-<div role="tabpanel" class="tabpanel is-hidden" id="<%= tabId %>" aria-labelledby="tab-<%= index %>" aria-hidden="true" tabindex="0"></div>
+<div role="tabpanel" class="tabpanel is-hidden" id="<%- tabId %>" aria-labelledby="tab-<%- index %>" aria-hidden="true" tabindex="0"></div>