diff --git a/components/script/dom/identityhub.rs b/components/script/dom/identityhub.rs
index cb129dc5ca2..81831be9202 100644
--- a/components/script/dom/identityhub.rs
+++ b/components/script/dom/identityhub.rs
@@ -36,6 +36,12 @@ pub struct IdentityHub {
     render_passes: IdentityManager<RenderPass>,
 }
 
+impl Default for IdentityHub {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl IdentityHub {
     pub fn new() -> Self {
         IdentityHub {