diff --git a/src/completion.rs b/src/completion.rs
index 2d1971f01..d453d4598 100644
--- a/src/completion.rs
+++ b/src/completion.rs
@@ -55,6 +55,16 @@ impl Candidate for Rc<str> {
     }
 }
 
+impl Candidate for Arc<str> {
+    fn display(&self) -> &str {
+        self
+    }
+
+    fn replacement(&self) -> &str {
+        self
+    }
+}
+
 /// Completion candidate pair
 #[derive(Clone)]
 pub struct Pair {