diff --git a/pastebin.go b/pastebin.go
index 224d08d..7302dec 100644
--- a/pastebin.go
+++ b/pastebin.go
@@ -104,14 +104,6 @@ func Sha1(paste string) string {
 	return sha
 }
 
-// DurationFromExpiry takes the expiry in string format and returns the duration
-// that the paste will exist for
-func DurationFromExpiry(expiry string) time.Duration {
-	duration, err := time.ParseDuration(expiry)
-	Check(err)
-	return duration
-}
-
 // Save function handles the saving of each paste.
 // raw string is the raw paste input
 // lang string is the user specified language for syntax highlighting
@@ -144,7 +136,9 @@ func Save(raw string, lang string, title string, expiry string) Response {
 	}
 
 	const timeFormat = "2006-01-02 15:04:05"
-	expiryTime := time.Now().Add(DurationFromExpiry(expiry)).Format(timeFormat)
+	duration, err := time.ParseDuration(expiry)
+	Check(err)
+	expiryTime := time.Now().Add(duration).Format(timeFormat)
 
 	delKey := uniuri.NewLen(40)
 	dataEscaped := html.EscapeString(raw)