diff --git a/Calculator.java b/Calculator.java
index 6883a36..eebadba 100644
--- a/Calculator.java
+++ b/Calculator.java
@@ -120,7 +120,7 @@ public double cirAr(double r) {
 	 *            the radius
 	 * @return the perimeter of a circle with radius r.
 	 */
-	public double cirPer(double r) {
+	public double circlePerimeter (double r) {
 		return Math.PI * r * 2;
 	}