diff --git a/tests/defaults.rs b/tests/defaults.rs
index caca94f..21ddd05 100644
--- a/tests/defaults.rs
+++ b/tests/defaults.rs
@@ -34,7 +34,7 @@ fn env_var_string() {
 
     #[derive(Initial)]
     struct Settings {
-        #[initial(env="FOO")]
+        #[initial(env = "FOO")]
         foo: String,
     }