diff --git a/src/main/java/org/gcube/common/authorization/utils/secret/JWTSecret.java b/src/main/java/org/gcube/common/authorization/utils/secret/JWTSecret.java
index e3c1836..392da15 100644
--- a/src/main/java/org/gcube/common/authorization/utils/secret/JWTSecret.java
+++ b/src/main/java/org/gcube/common/authorization/utils/secret/JWTSecret.java
@@ -169,7 +169,7 @@ public class JWTSecret extends Secret {
 
 	@Override
 	public String getUsername() throws Exception {
-		return accessToken.getPreferredUsername();
+		return getAccessToken().getPreferredUsername();
 	}
 	
 	@Override
diff --git a/src/main/java/org/gcube/common/authorization/utils/user/KeycloakUser.java b/src/main/java/org/gcube/common/authorization/utils/user/KeycloakUser.java
index 45ef517..32b87ea 100644
--- a/src/main/java/org/gcube/common/authorization/utils/user/KeycloakUser.java
+++ b/src/main/java/org/gcube/common/authorization/utils/user/KeycloakUser.java
@@ -21,7 +21,7 @@ public class KeycloakUser extends AccessToken implements User {
 	@Override
 	@JsonIgnore
 	public String getUsername() {
-		return (String) getOtherClaims().getOrDefault("preferred_username", getId());
+		return getPreferredUsername();
 	}
 
 	@Override
diff --git a/src/test/java/org/gcube/common/authorization/utils/ContextTest.java b/src/test/java/org/gcube/common/authorization/utils/ContextTest.java
index 7153bd7..6cd1d2d 100644
--- a/src/test/java/org/gcube/common/authorization/utils/ContextTest.java
+++ b/src/test/java/org/gcube/common/authorization/utils/ContextTest.java
@@ -36,7 +36,10 @@ public class ContextTest {
 		} catch(IOException e) {
 			throw new RuntimeException(e);
 		}
-
+		
+		//DEFAULT_TEST_SCOPE_NAME = "/pred4s/preprod/preVRE";
+		// DEFAULT_TEST_SCOPE_NAME = "/gcube/devsec/devVRE";
+		
 		ROOT = "/gcube";
 //		VO = ROOT + "/devsec";
 //		VRE = VO + "/devVRE";
@@ -83,4 +86,4 @@ public class ContextTest {
 		SecretManagerProvider.instance.reset();
 	}
 	
-}
+}
\ No newline at end of file
diff --git a/src/test/java/org/gcube/common/authorization/utils/manager/SecretManagerTest.java b/src/test/java/org/gcube/common/authorization/utils/manager/SecretManagerTest.java
index 7f5f308..b842917 100644
--- a/src/test/java/org/gcube/common/authorization/utils/manager/SecretManagerTest.java
+++ b/src/test/java/org/gcube/common/authorization/utils/manager/SecretManagerTest.java
@@ -3,6 +3,7 @@ package org.gcube.common.authorization.utils.manager;
 import java.util.Set;
 
 import org.gcube.common.authorization.utils.ContextTest;
+import org.gcube.common.authorization.utils.secret.JWTSecret;
 import org.gcube.common.authorization.utils.secret.Secret;
 import org.junit.Test;
 import org.slf4j.Logger;
@@ -25,4 +26,11 @@ public class SecretManagerTest extends ContextTest {
 		}
 	}
 	
+	@Test
+	public void testApptoken() throws Exception {
+		Secret secret = new JWTSecret("eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJSSklZNEpoNF9qdDdvNmREY0NlUDFfS1l0akcxVExXVW9oMkQ2Tzk1bFNBIn0.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.IiFfE3mCOyX0W6PnEUq5_cW8no_nFqugi7jQzLLYwTjLMT6A5AGkfaNJYakbUXeVnsVyLkEES5uLu5TX3_nxruNyH3OpgKyDOCaejytj-qifJIhszEA5I5msoGRxt6v_JWMWkhdVmUfRKhOdhsN8JNBNUWVsEAUHoYM26sJl1CoW9_zE5VmnfYHFMnsFLptKlGyIWqO6leo-cPHclA4mfTWHoB13QTHoX5qeFuszymw8xACRBTJbyWfM3YdRDtwu1lTsMuvZ2gZNIn9ofbJlqpRxDRVfqvJBGBY_48pb21TeRHCdWJLEaNlYCE1fxztEX8gdk_G_KbwRtA_C10SbtA\",\"expires_in\":300,\"refresh_expires_in\":1800,\"refresh_token\":\"eyJhbGciOiJIUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJjOTk5YmVjNC1iNDc4LTQ4Y2YtYmI5OS0wMWMxODY5NzcwNGIifQ.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.t1yYIMzxrUC2UeiVxZ-LATSP-tYT2RsOD2");
+		String username = secret.getUsername();
+		String anotherUsername = secret.getUser().getUsername();
+		logger.debug("{} - {}", username, anotherUsername);
+	}
 }