diff --git a/compiler/rustc_span/src/hygiene.rs b/compiler/rustc_span/src/hygiene.rs
index 942c6648340..3e28468171b 100644
--- a/compiler/rustc_span/src/hygiene.rs
+++ b/compiler/rustc_span/src/hygiene.rs
@@ -759,7 +759,7 @@ impl ExpnData {
 
     #[inline]
     pub fn is_root(&self) -> bool {
-        if let ExpnKind::Root = self.kind { true } else { false }
+        matches!(self.kind, ExpnKind::Root)
     }
 }