diff --git a/src/atrule/mod.rs b/src/atrule/mod.rs
index e5c0ffa..72ec88f 100644
--- a/src/atrule/mod.rs
+++ b/src/atrule/mod.rs
@@ -106,7 +106,7 @@ impl AtRule {
             AtRuleKind::Annotation => todo!("@annotation not yet implemented"),
             AtRuleKind::AtRoot => {
                 let mut selector = &Selector::replace(
-                    super_selector.clone(),
+                    super_selector,
                     Selector::from_tokens(
                         &mut read_until_open_curly_brace(toks).into_iter().peekable(),
                         scope,
@@ -127,7 +127,7 @@ impl AtRule {
                 let raw_stmts = eat_stmts_at_root(
                     &mut body.into_iter().peekable(),
                     scope,
-                    &selector,
+                    selector,
                     0,
                     is_some,
                 )?
diff --git a/src/atrule/parse.rs b/src/atrule/parse.rs
index 5bea5c6..a5f15ce 100644
--- a/src/atrule/parse.rs
+++ b/src/atrule/parse.rs
@@ -58,7 +58,7 @@ pub(crate) fn eat_stmts_at_root<I: Iterator<Item = Token>>(
                 if nesting > 1 || is_some {
                     selector = super_selector.zip(&selector);
                 } else {
-                    selector = Selector::replace(super_selector.clone(), selector);
+                    selector = Selector::replace(super_selector, selector);
                 }
                 nesting += 1;
                 let rules = eat_stmts_at_root(toks, scope, &selector, nesting, true)?;
diff --git a/src/selector/mod.rs b/src/selector/mod.rs
index 6ac47c8..43a9d06 100644
--- a/src/selector/mod.rs
+++ b/src/selector/mod.rs
@@ -374,7 +374,7 @@ impl Selector {
         }
     }
 
-    pub fn replace(super_selector: Selector, this: Selector) -> Selector {
+    pub fn replace(super_selector: &Selector, this: Selector) -> Selector {
         if super_selector.0.is_empty() || this.0.is_empty() {
             return this;
         }
@@ -397,7 +397,7 @@ impl Selector {
                                 found_inner = true;
                                 kinds.push(SelectorKind::PseudoParen(
                                     name,
-                                    Selector::replace(super_selector.clone(), inner),
+                                    Selector::replace(super_selector, inner),
                                 ))
                             } else {
                                 kinds.push(SelectorKind::PseudoParen(name, inner));
@@ -445,7 +445,7 @@ impl Selector {
                                 found_inner = true;
                                 this_selector.push(SelectorKind::PseudoParen(
                                     s,
-                                    Selector::replace(self.clone(), inner_selector),
+                                    Selector::replace(self, inner_selector),
                                 ))
                             } else {
                                 this_selector.push(SelectorKind::PseudoParen(s, inner_selector));