diff --git a/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java b/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java
index 0ff2fbe..dc8c8e1 100644
--- a/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java
+++ b/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java
@@ -37,4 +37,8 @@ private double subtract(double firstOperand, double secondOperand) {
     private double add(double firstOperand, double secondOperand) {
         return firstOperand + secondOperand;
     }
+
+    private double squareNotCovered(double x) {
+        return x * x;
+    }
 }