diff --git a/src/main/java/org/gcube/common/authorization/utils/manager/SecretManager.java b/src/main/java/org/gcube/common/authorization/utils/manager/SecretManager.java
index 978c57b..7ea3dd9 100644
--- a/src/main/java/org/gcube/common/authorization/utils/manager/SecretManager.java
+++ b/src/main/java/org/gcube/common/authorization/utils/manager/SecretManager.java
@@ -39,7 +39,7 @@ public class SecretManager {
 
 	public synchronized void startSession(Secret secret) throws Exception {
 		if (currentSecretHolder != initialSecretHolder) {
-			throw new Exception("You are already in a session. You must terminate the session first.");
+			throw new RuntimeException("You are already in a session. You must terminate the session first.");
 		}
 		initialSecretHolder.reset();
 		currentSecretHolder = new SecretHolder(secret);
@@ -48,7 +48,7 @@ public class SecretManager {
 
 	public synchronized void startSession(Collection<Secret> secrets) throws Exception {
 		if (currentSecretHolder != initialSecretHolder) {
-			throw new Exception("You are already in a session. You must terminate the session first.");
+			throw new RuntimeException("You are already in a session. You must terminate the session first.");
 		}
 		initialSecretHolder.reset();
 		currentSecretHolder = new SecretHolder(secrets);
@@ -57,7 +57,7 @@ public class SecretManager {
 	
 	public synchronized void startSession(SecretHolder secretHolder) throws Exception {
 		if (currentSecretHolder != initialSecretHolder) {
-			throw new Exception("You are already in a session. You must terminate the session first.");
+			throw new RuntimeException("You are already in a session. You must terminate the session first.");
 		}
 		initialSecretHolder.reset();
 		currentSecretHolder = secretHolder;