diff --git a/src/main/java/APCalendar.java b/src/main/java/APCalendar.java
index f9b057e..a55b82f 100644
--- a/src/main/java/APCalendar.java
+++ b/src/main/java/APCalendar.java
@@ -60,7 +60,7 @@ private static int dayOfYear(int month, int day, int year)
   public static int dayOfWeek(int month, int day, int year)
   {
     /* to be implemented in part (b) */
-    int startDay=firstDayofYear(year);
+    int startDay=firstDayOfYear(year);
     int nthDay=dayofYear(month, day, year);
     int returnDay= (startDay+nthDay-1)%7;
     return returnDay;