diff --git a/src/app/pc_string.go b/src/app/pc_string.go
index 03a8340..da6e97c 100644
--- a/src/app/pc_string.go
+++ b/src/app/pc_string.go
@@ -51,11 +51,11 @@ func HumanDuration(d time.Duration) string {
 	} else if hours < 24*365*2 {
 		return fmt.Sprintf("%dd", hours/24)
 	} else if hours < 24*365*8 {
-		dy := int(hours/24) % 365
+		dy := hours / 24 % 365
 		if dy == 0 {
 			return fmt.Sprintf("%dy", hours/24/365)
 		}
 		return fmt.Sprintf("%dy%dd", hours/24/365, dy)
 	}
-	return fmt.Sprintf("%dy", int(hours/24/365))
+	return fmt.Sprintf("%dy", hours/24/365)
 }