diff --git a/src/lib.rs b/src/lib.rs
index 0fd4ed5..16489f1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -76,18 +76,26 @@ mod tests {
             literal("-")
                 .optional()
                 .then(json_number_inner)
-                .map(|(maybe_sign, val)| {
+                .map(|(maybe_sign, mut val)| {
                     if maybe_sign.is_some() {
-                        val * -1.0
-                    } else {
-                        val
+                        val *= -1.0;
                     }
+                    JsonValue::Num(val)
                 });
 
-        assert_eq!(json_number.parse("-383").unwrap().0, -383f64);
-        assert_eq!(json_number.parse("-.383").unwrap().0, -0.383);
-        assert_eq!(json_number.parse(".383").unwrap().0, 0.383);
-        assert_eq!(json_number.parse("-1.383").unwrap().0, -1.383);
+        assert_eq!(
+            json_number.parse("-383").unwrap().0,
+            JsonValue::Num(-383f64)
+        );
+        assert_eq!(
+            json_number.parse("-.383").unwrap().0,
+            JsonValue::Num(-0.383)
+        );
+        assert_eq!(json_number.parse(".383").unwrap().0, JsonValue::Num(0.383));
+        assert_eq!(
+            json_number.parse("-1.383").unwrap().0,
+            JsonValue::Num(-1.383)
+        );
 
         let json_string = seq((
             literal_char('"'),
@@ -96,7 +104,7 @@ mod tests {
         ))
         .map(|(_, s, _)| JsonValue::Str(s.to_string()));
 
-        let json_value = choice((json_null, json_bool, json_string));
+        let json_value = choice((json_null, json_bool, json_number, json_string));
 
         assert_eq!(json_value.parse("true"), Ok((JsonValue::Bool(true), "")));
     }