diff --git a/include/years.hpp b/include/years.hpp
index 24b4fdf..511b7a5 100644
--- a/include/years.hpp
+++ b/include/years.hpp
@@ -9,31 +9,31 @@ double years_to_minutes(double years);
 double years_to_seconds(double years);
 double years_to_milliseconds(double years);
 // DEFINED FUNCTIONS FOR CONVERSION OF YEARS TO MONTHS 
-double years_to_(double years) {
+double years_to_months(double years) {
     return years * 12;
 }
 // DEFINED FUNCTIONS FOR CONVERSION OF YEARS TO WEEKS
-double years_to_(double years) {
+double years_to_weeks(double years) {
     return years * 52.1429;
 }
 // DEFINED FUNCTIONS FOR CONVERSION OF YEARS TO DAYS
-double years_to_(double years) {
+double years_to_days(double years) {
     return years * 365;
 }
 // DEFINED FUNCTIONS FOR CONVERSION OF YEARS TO HOURS
-double years_to_(double years) {
+double years_to_hours(double years) {
     return years * 8760;
 }
 // DEFINED FUNCTIONS FOR CONVERSION OF YEARS TO MINUTES
-double years_to_(double years) {
+double years_to_minutes(double years) {
     return years * 525600;
 }
 // DEFINED FUNCTIONS FOR CONVERSION OF YEARS TO SECONDS
-double years_to_(double years) {
+double years_to_seconds(double years) {
     return years * 31556952;
 }
 // DEFINED FUNCTIONS FOR CONVERSION OF YEARS TO MILLISECONDS
-double years_to_(double years) {
+double years_to_milliseconds(double years) {
     return years * 31556926000;
 }
 #endif