diff --git a/rocket/jwt-authentication/src/claims.rs b/rocket/jwt-authentication/src/claims.rs
index dde34121..0ddd281e 100644
--- a/rocket/jwt-authentication/src/claims.rs
+++ b/rocket/jwt-authentication/src/claims.rs
@@ -18,7 +18,8 @@ const SECRET: &str = "secret";
 
 lazy_static! {
     /// Time before token expires (aka exp claim)
-    static ref TOKEN_EXPIRATION: Duration = Duration::minutes(5);
+    static ref TOKEN_EXPIRATION: Duration = Duration::try_minutes(5)
+        .expect("failed to create an expiration duration");
 }
 
 // Used when decoding a token to `Claims`