diff --git a/src/main/java/org/gcube/gcat/utils/Constants.java b/src/main/java/org/gcube/gcat/utils/Constants.java
index 9540ff8..28161e7 100644
--- a/src/main/java/org/gcube/gcat/utils/Constants.java
+++ b/src/main/java/org/gcube/gcat/utils/Constants.java
@@ -1,6 +1,7 @@
 package org.gcube.gcat.utils;
 
 import java.io.InputStream;
+import java.net.URL;
 import java.util.Properties;
 
 import javax.ws.rs.InternalServerErrorException;
@@ -10,23 +11,29 @@ import org.gcube.common.authorization.utils.secret.JWTSecret;
 import org.gcube.common.authorization.utils.secret.Secret;
 import org.gcube.common.keycloak.KeycloakClientFactory;
 import org.gcube.common.keycloak.model.TokenResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * @author Luca Frosini (ISTI - CNR)
  */
 public class Constants {
 	
+	private static final Logger logger = LoggerFactory.getLogger(Constants.class);
+	
 	public static final String CATALOGUE_NAME = "gCat";
 	
-	private static final String CLIENT_SECRET_FILENAME = "config.properties";
-	private static final String CLIENT_ID = "gcat";
+	protected static final String CLIENT_SECRET_FILENAME = "config.properties";
+	protected static final String CLIENT_ID = "gcat";
 	protected static String clientSecret;
 	
 	private static String getClientSecret(String context) {
 		try {
 			if(clientSecret==null) {
 				Properties properties = new Properties();
-				InputStream input = Constants.class.getClassLoader().getResourceAsStream(CLIENT_SECRET_FILENAME);
+				URL url = ClassLoader.getSystemClassLoader().getResource(CLIENT_SECRET_FILENAME);
+				logger.trace("Going to read {} at {}", CLIENT_SECRET_FILENAME, url.toString());
+				InputStream input = ClassLoader.getSystemClassLoader().getResourceAsStream(CLIENT_SECRET_FILENAME);
 				properties.load(input);
 				int index = context.indexOf('/', 1);
 				String root = context.substring(0, index == -1 ? context.length() : index);
diff --git a/src/test/java/org/gcube/gcat/utils/ConstantsTest.java b/src/test/java/org/gcube/gcat/utils/ConstantsTest.java
index 3d77a06..3071bea 100644
--- a/src/test/java/org/gcube/gcat/utils/ConstantsTest.java
+++ b/src/test/java/org/gcube/gcat/utils/ConstantsTest.java
@@ -1,5 +1,7 @@
 package org.gcube.gcat.utils;
 
+import java.net.URL;
+
 import org.gcube.common.authorization.utils.manager.SecretManagerProvider;
 import org.gcube.common.authorization.utils.secret.Secret;
 import org.gcube.common.encryption.encrypter.StringEncrypter;
@@ -34,4 +36,16 @@ public class ConstantsTest extends ContextTest {
 		logger.debug(secret.getToken());
 	}	
 	
+	@Test
+	public void getResourceTest() {
+		URL url1 = ConstantsTest.class.getResource(Constants.CLIENT_SECRET_FILENAME);
+		logger.debug("{}", url1);
+		URL url2 = ConstantsTest.class.getClassLoader().getResource(Constants.CLIENT_SECRET_FILENAME);
+		logger.debug("{}", url2);
+		URL url3 = ClassLoader.getSystemClassLoader().getResource(Constants.CLIENT_SECRET_FILENAME);
+		logger.debug("{}", url3);
+		
+	}
+	
+	
 }