diff --git a/internal/vault.go b/internal/vault.go
index 9def58e..db71b10 100644
--- a/internal/vault.go
+++ b/internal/vault.go
@@ -31,17 +31,17 @@ func (v vault) Store(msg string, ttl string) (token string, err error) {
 	// Default TTL
 	if ttl == "" {
 		ttl = "48h"
-	}
-
-	// Verify duration
-	d, err := time.ParseDuration(ttl)
-	if err != nil {
-		return "", fmt.Errorf("cannot parse duration %v", err)
-	}
+	} else {
+		// Verify duration
+		d, err := time.ParseDuration(ttl)
+		if err != nil {
+			return "", fmt.Errorf("cannot parse duration %v", err)
+		}
 
-	// validate duration length
-	if d > 168*time.Hour || d == 0*time.Hour {
-		return "", fmt.Errorf("cannot set ttl to infinte or more than 7 days %v", err)
+		// validate duration length
+		if d > 168*time.Hour || d == 0*time.Hour {
+			return "", fmt.Errorf("cannot set ttl to infinte or more than 7 days %v", err)
+		}
 	}
 
 	t, err := v.createOneTimeToken(ttl)