diff --git a/saml-core/src/main/java/org/keycloak/saml/processing/core/saml/v2/util/XMLTimeUtil.java b/saml-core/src/main/java/org/keycloak/saml/processing/core/saml/v2/util/XMLTimeUtil.java
index 31916ff627..8510d47658 100755
--- a/saml-core/src/main/java/org/keycloak/saml/processing/core/saml/v2/util/XMLTimeUtil.java
+++ b/saml-core/src/main/java/org/keycloak/saml/processing/core/saml/v2/util/XMLTimeUtil.java
@@ -130,7 +130,7 @@ public class XMLTimeUtil {
      * @return
      */
     public static long inMilis(int valueInMins) {
-        return valueInMins * 60 * 1000;
+        return (long) valueInMins * 60 * 1000;
     }
 
     /**
@@ -241,4 +241,4 @@ public class XMLTimeUtil {
             }
         }
     }
-}
\ No newline at end of file
+}