diff --git a/challenges/declaring-variables/src/lib.rs b/challenges/declaring-variables/src/lib.rs
index 4e13e25..a1c34cc 100644
--- a/challenges/declaring-variables/src/lib.rs
+++ b/challenges/declaring-variables/src/lib.rs
@@ -1,11 +1,6 @@
 pub fn calculate_area() -> u32 {
-    // Declare width and height as immutable variables
     let width = 10;
     let height = 5;
 
-    // Calculate the area of the rectangle
-    let area = width * height;
-
-    // Return the calculated area
-    area
+    width * height
 }
diff --git a/challenges/declaring-variables/tests/tests.rs b/challenges/declaring-variables/tests/tests.rs
index 36d74ba..ec15ebe 100644
--- a/challenges/declaring-variables/tests/tests.rs
+++ b/challenges/declaring-variables/tests/tests.rs
@@ -1,5 +1,5 @@
 use declaring_variables::*;
-use syntest::Syntest;
+use syntest::{LocalValue, Syntest};
 
 #[test]
 fn test_calculate_area() {
@@ -9,4 +9,13 @@ fn test_calculate_area() {
 #[test]
 fn test_variable_width() {
     let syntest = Syntest::from("./src/lib.rs");
+
+    assert_eq!(
+        syntest.get_local_value("calculate_area", "width").unwrap(),
+        LocalValue::Int(10)
+    );
+    assert_eq!(
+        syntest.get_local_value("calculate_area", "height").unwrap(),
+        LocalValue::Int(5)
+    );
 }