diff --git a/mydate.h b/mydate.h
index 48ecc10..58b1d73 100644
--- a/mydate.h
+++ b/mydate.h
@@ -6,7 +6,7 @@ class mydate
     int year, month, day;
 
 public:
-    mydate(int year_, int month_, int day_);
+    mydate(int _year, int _month, int _day);
     ~mydate();
     void print();
 };