diff --git a/src/test/java/CalculationsTest.java b/src/test/java/CalculationsTest.java
index accfdae..29d2496 100644
--- a/src/test/java/CalculationsTest.java
+++ b/src/test/java/CalculationsTest.java
@@ -13,5 +13,8 @@ public class CalculationsTest {
         // Test with a negative number
         assertEquals(16, calc.calculateSquare(-4));
 
+        // Test with zero
+        assertEquals(0, calc.calculateSquare(0));
+
     }
 }