diff --git a/tests/mock/clitools.rs b/tests/mock/clitools.rs
index dfa3ad62391..311e85b6a27 100644
--- a/tests/mock/clitools.rs
+++ b/tests/mock/clitools.rs
@@ -637,8 +637,7 @@ where
     let mut vars: HashMap<String, String> = HashMap::default();
     self::env(config, &mut vars);
     vars.extend(env.iter().map(|(k, v)| (k.to_string(), v.to_string())));
-    let mut arg_strings: Vec<Box<str>> = Vec::new();
-    arg_strings.push(name.to_owned().into_boxed_str());
+    let mut arg_strings: Vec<Box<str>> = vec![name.to_owned().into_boxed_str()];
     for arg in args {
         arg_strings.push(
             arg.as_ref()