diff --git a/oauth-2.0/jwt/src/main/java/org/apache/oltu/oauth2/jwt/io/JWTClaimsSetParser.java b/oauth-2.0/jwt/src/main/java/org/apache/oltu/oauth2/jwt/io/JWTClaimsSetParser.java
index 45445b06..629ab6d6 100644
--- a/oauth-2.0/jwt/src/main/java/org/apache/oltu/oauth2/jwt/io/JWTClaimsSetParser.java
+++ b/oauth-2.0/jwt/src/main/java/org/apache/oltu/oauth2/jwt/io/JWTClaimsSetParser.java
@@ -34,9 +34,17 @@ protected <T> boolean handleProperty(String key, T value) {
         if (AUDIENCE.equals(key)) {
             handleAudience(value);
         } else if (EXPIRATION_TIME.equals(key)) {
-            getBuilder().setClaimsSetExpirationTime(((Integer) value).longValue());
+            if (value instanceof Long) {
+                getBuilder().setClaimsSetExpirationTime((Long) value);
+            } else {
+                getBuilder().setClaimsSetExpirationTime(((Integer) value).longValue());
+            }
         } else if (ISSUED_AT.equals(key)) {
-            getBuilder().setClaimsSetIssuedAt(((Integer) value).longValue());
+            if (value instanceof Long) {
+                getBuilder().setClaimsSetIssuedAt((Long) value);
+            } else {
+                getBuilder().setClaimsSetIssuedAt(((Integer) value).longValue());
+            }
         } else if (ISSUER.equals(key)) {
             getBuilder().setClaimsSetIssuer(String.valueOf(value));
         } else if (JWT_ID.equals(key)) {