1 files changed, 2 insertions, 2 deletions
diff --git a/src/eval/scope.rs b/src/eval/scope.rs
index f2aa26fb..f3e13715 100644
--- a/src/eval/scope.rs
+++ b/src/eval/scope.rs
@@ -5,7 +5,7 @@ use std::hash::Hash;
 use ecow::{eco_format, EcoString};
 
 use super::{IntoValue, Library, Value};
-use crate::diag::StrResult;
+use crate::diag::{bail, StrResult};
 
 /// A stack of scopes.
 #[derive(Debug, Default, Clone)]
@@ -171,7 +171,7 @@ impl Slot {
         match self.kind {
             Kind::Normal => Ok(&mut self.value),
             Kind::Captured => {
-                Err("variables from outside the function are read-only and cannot be modified")?
+                bail!("variables from outside the function are read-only and cannot be modified")
             }
         }
     }