diff --git a/src/interfaces/utils.ts b/src/interfaces/utils.ts
index ef23c9b1..d9edd9d9 100644
--- a/src/interfaces/utils.ts
+++ b/src/interfaces/utils.ts
@@ -5,8 +5,10 @@ export function calculateAge(start: Date, end = new Date()) {
   let month = end.getMonth() - start.getMonth();
   let day = end.getDate() - start.getDate();
 
-  if (month < 0) year -= 1;
-  if (month < 0) month += 12;
+  if (month < 0) {
+    month += 12;
+    year -= 1;
+  }
   if (day < 0) {
     month -= 1;
     day =