diff --git a/fish-rust/src/env/environment_impl.rs b/fish-rust/src/env/environment_impl.rs
index 03c95804b..ec83ff011 100644
--- a/fish-rust/src/env/environment_impl.rs
+++ b/fish-rust/src/env/environment_impl.rs
@@ -647,8 +647,7 @@ impl EnvScopedImpl {
         );
 
         // Construct the export list: a list of strings of the form key=value.
-        let mut export_list: Vec<CString> = Vec::new();
-        export_list.reserve(vals.len());
+        let mut export_list: Vec<CString> = Vec::with_capacity(vals.len());
         for (key, val) in vals.into_iter() {
             let mut str = key;
             str.push('=');