diff --git a/src/config/loading/secret.rs b/src/config/loading/secret.rs
index cbf1134216d0b..59c10b43bb936 100644
--- a/src/config/loading/secret.rs
+++ b/src/config/loading/secret.rs
@@ -59,25 +59,24 @@ impl SecretBackendLoader {
         let mut secrets: HashMap<String, String> = HashMap::new();
 
         for (backend_name, keys) in &self.secret_keys {
-            let backend = self.backends.get_mut(&ComponentKey::from(backend_name.clone())).ok_or_else(|| format!("Backend \"{backend_name}\" is required for secret retrieval but was not found in config."))?;
+            let backend = self.backends
+                .get_mut(&ComponentKey::from(backend_name.clone()))
+                .ok_or_else(|| {
+                    format!("Backend \"{backend_name}\" is required for secret retrieval but was not found in config.")
+                })?;
 
             debug!(message = "Retrieving secrets from a backend.", backend = ?backend_name, keys = ?keys);
             let backend_secrets = backend
                 .retrieve(keys.clone(), signal_rx)
-                .map_ok(|backend_secrets| {
-                    backend_secrets.into_iter().map(|(k, v)| {
-                        trace!(message = "Successfully retrieved a secret.", backend = ?backend_name, key = ?k);
-                        (format!("{backend_name}.{k}"), v)
-                    }).collect::<HashMap<String, String>>()
-                })
                 .map_err(|e| {
-                    format!(
-                        "Error while retrieving secret from backend \"{backend_name}\": {e}.",
-                    )
+                    format!("Error while retrieving secret from backend \"{backend_name}\": {e}.",)
                 })
                 .await?;
 
-            secrets.extend(backend_secrets);
+            for (k, v) in backend_secrets {
+                trace!(message = "Successfully retrieved a secret.", backend = ?backend_name, key = ?k);
+                secrets.insert(format!("{backend_name}.{k}"), v);
+            }
         }
 
         Ok(secrets)