diff --git a/src/main.rs b/src/main.rs
index 7062682..4e3c45a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -47,6 +47,19 @@ fn add(f: &String, x: &Option<String>, tag: &Option<String>) -> Result<(), Strin
    Ok(())
 }
 
+#[derive(Debug, Serialize)]
+struct Log {
+   t: String,
+   d: u8,
+   xs: Vec<LogX>,
+}
+#[derive(Debug, Serialize)]
+struct LogX {
+   d: u8,
+   x: String,
+   xs: Vec<String>,
+}
+
 fn log(f: &String, since: &Option<String>) -> Result<(), String> {
    let since = parse_time(since)?;
    let tsheet = load(&f)?;
@@ -126,7 +139,7 @@ mod test_save_load {
          X{t: 2, x: "ghi".to_string(), tag: "".to_string()},
       ]};
       assert_eq!(
-         load("./src/testdata/standalone.yaml".to_string()).expect("cant load standalone.yaml"),
+         load(&"./src/testdata/standalone.yaml".to_string()).expect("cant load standalone.yaml"),
          want,
       );