diff --git a/src/templates/src/calendar_index.html b/src/templates/src/calendar_index.html
index 250fa9a..771a360 100644
--- a/src/templates/src/calendar_index.html
+++ b/src/templates/src/calendar_index.html
@@ -63,8 +63,11 @@
 			}
 		}
 
+		icalLink.disabled = false;
 		if (hasAll) {
 			icalLink.href = baseICalUrl;
+		} else if (icalFilter.length == 0) {
+			icalLink.removeAttribute("href");
 		} else {
 			icalFilter.sort();
 			let url = new URL(baseICalUrl);