diff --git a/src/metar.rs b/src/metar.rs
index 4ef7604..6c29712 100644
--- a/src/metar.rs
+++ b/src/metar.rs
@@ -1,5 +1,4 @@
 use crate::{Config, Position};
-use chrono::format;
 use chrono::DateTime;
 use chrono::FixedOffset;
 use chrono::TimeDelta;
@@ -354,6 +353,8 @@ fn is_exact_match(station: &str, config: &Config) -> bool {
 mod tests {
     use std::str::FromStr;
 
+    use units::{AltitudeUnit, DistanceUnit};
+
     use super::*;
 
     #[test]
diff --git a/src/metar/wxcodes.rs b/src/metar/wxcodes.rs
index 5b7130b..420c371 100644
--- a/src/metar/wxcodes.rs
+++ b/src/metar/wxcodes.rs
@@ -333,7 +333,7 @@ mod tests {
     use std::str::FromStr;
 
     use super::{get_wxcodes_from_json, WxCode, WxCodeIntensity};
-    use crate::metar::{wxcode_from_str, MetarField, WxCodeProximity};
+    use crate::metar::{MetarField, WxCodeProximity};
 
     #[test]
     fn test_get_regex() {
@@ -371,13 +371,8 @@ mod tests {
 
     #[test]
     fn test_wxcode_from_str() {
-        let expected: MetarField = MetarField::WxCode(
-            WxCode::Ra,
-            WxCodeIntensity::Light,
-            WxCodeProximity::OnStation,
-            crate::metar::WxCodeDescription::None,
-        );
-        let actual = wxcode_from_str("-RA");
-        assert_eq!(Some(expected), actual);
+        let expected = WxCode::Ra;
+        let actual = WxCode::from_str("-RA").unwrap();
+        assert_eq!(expected, actual);
     }
 }