diff -r ed31bfceddda -r 8184dadefc8b src/pyams_content/root/zmi/templates/advanced-search.pt
--- a/src/pyams_content/root/zmi/templates/advanced-search.pt	Wed Jul 01 18:05:38 2020 +0200
+++ b/src/pyams_content/root/zmi/templates/advanced-search.pt	Fri Jul 03 12:27:49 2020 +0200
@@ -184,6 +184,13 @@
 									<input tal:replace="structure widget.render()" />
 								</div>
 							</fieldset>
+							<fieldset tal:condition="'collections' in view.widgets">
+								<legend class="switcher" i18n:translate="">Collections</legend>
+								<div class="input"
+									 tal:define="widget view.widgets['collections']">
+									<input tal:replace="structure widget.render()" />
+								</div>
+							</fieldset>
 						</fieldset>
 					</tal:loop>
 					<div class="widgets-suffix"