diff --git a/servo/components/style/stylesheets/stylesheet.rs b/servo/components/style/stylesheets/stylesheet.rs
index 1d0103e02aeb..805a539ef989 100644
--- a/servo/components/style/stylesheets/stylesheet.rs
+++ b/servo/components/style/stylesheets/stylesheet.rs
@@ -240,7 +240,7 @@ pub trait StylesheetInDocument {
         device: &'a Device,
         guard: &'a SharedRwLockReadGuard<'b>
     ) -> EffectiveRulesIterator<'a, 'b> {
-        self.iter_rules::<'a, 'b, EffectiveRules>(device, guard)
+        self.iter_rules::<EffectiveRules>(device, guard)
     }
 
     rule_filter! {