diff --git a/src/depositMoney.c b/src/depositMoney.c
index 5732f7e..33a4e2d 100644
--- a/src/depositMoney.c
+++ b/src/depositMoney.c
@@ -1,6 +1,6 @@
 #include "depositMoney.h"
-#include "updateCustomerAccountBalance.h"
-#include "currentCustomerAccountBalance.h"
+#include "updateCustomerAccountBalance.c"
+#include "currentCustomerAccountBalance.c"
 
 void askToTryAgain(bool afterError, int customerID){
     char choice;
diff --git a/src/interestCalculator.c b/src/interestCalculator.c
index d9c2cce..6998887 100644
--- a/src/interestCalculator.c
+++ b/src/interestCalculator.c
@@ -14,6 +14,9 @@ void troubleshoot(int errorCode){
         case 2:
             printf("Duration not valid. Make sure it is a valid number over the value of zero.");
             break;
+        case 3:
+            printf("Invalid option. Aborting.");
+            break;
     }
 }
 
@@ -25,6 +28,7 @@ void calculateYearlyInterest(){
     float principalAmount;
     float interestPerYear;
     float timeInYears;
+    int choice;
 
     printf("Please enter the principal amount:");
     if (scanf("%f", &principalAmount) != 1 || principalAmount <= 0) {
@@ -37,13 +41,28 @@ void calculateYearlyInterest(){
         troubleshoot(0);
         return;
     }
-
-    printf("\nPlease enter interest time in years:");
-    if (scanf("%f", &timeInYears) != 1 || timeInYears <= 0) {
+    printf("\nWould you like to enter the time in [1]months or in [2]years?\n");
+    scanf("%d",&choice);
+    if(choice==1){
+        printf("\nPlease enter interest time in months:");
+        if (scanf("%f", &timeInYears) != 1 || timeInYears <= 0) {
+            troubleshoot(2);
+            return;
+        }
+        timeInYears=timeInYears/12;
+
+    }else if(choice==2){
+        printf("\nPlease enter interest time in years:");
+        if (scanf("%f", &timeInYears) != 1 || timeInYears <= 0) {
+            troubleshoot(2);
+            return;
+        }
+    }else{
         troubleshoot(2);
-        return;
     }
 
+
+
     float interestDecimal=interestPerYear/100;
 
     float result= initiateInterest(principalAmount,interestDecimal,timeInYears);