diff --git a/SWADroid/src/es/ugr/swad/swadroid/Global.java b/SWADroid/src/es/ugr/swad/swadroid/Global.java
index 3d991dbf..f9a5ef01 100644
--- a/SWADroid/src/es/ugr/swad/swadroid/Global.java
+++ b/SWADroid/src/es/ugr/swad/swadroid/Global.java
@@ -32,6 +32,15 @@ public class Global {
      * User logged flag
      */
     public static boolean logged;
+    /**
+     * Enum type defining allowed user types
+     */
+    public static enum UserType {
+        ALL,
+        ADMIN,
+        STUDENT,
+        TEACHER
+    } 
     /**
      * Class Module's tag name for Logcat
      */