diff --git a/Userland/Libraries/LibWeb/DOM/Range.idl b/Userland/Libraries/LibWeb/DOM/Range.idl
index bcc49c2796..76a10dfd5b 100644
--- a/Userland/Libraries/LibWeb/DOM/Range.idl
+++ b/Userland/Libraries/LibWeb/DOM/Range.idl
@@ -4,6 +4,8 @@ interface Range {
 
     constructor();
 
+    readonly attribute boolean collapsed;
+
     readonly attribute Node startContainer;
     readonly attribute unsigned long startOffset;
     readonly attribute Node endContainer;