diff --git a/common/dao-api/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2Service.java b/common/dao-api/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2Service.java
index 320a2e650a..380738583f 100644
--- a/common/dao-api/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2Service.java
+++ b/common/dao-api/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2Service.java
@@ -24,6 +24,7 @@ import org.thingsboard.server.common.data.oauth2.OAuth2ClientRegistration;
 import org.thingsboard.server.common.data.oauth2.OAuth2ClientsParams;
 
 import java.util.List;
+import java.util.Map;
 
 public interface OAuth2Service {
     Pair<TenantId, OAuth2ClientRegistration> getClientRegistrationWithTenant(String registrationId);
@@ -46,4 +47,6 @@ public interface OAuth2Service {
 
     boolean isOAuth2ClientRegistrationAllowed(TenantId tenantId);
 
+    Map<TenantId, OAuth2ClientsParams> getAllOAuth2ClientsParams();
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2ServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2ServiceImpl.java
index 6d344d9640..c91739c9e6 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2ServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/oauth2/OAuth2ServiceImpl.java
@@ -315,7 +315,9 @@ public class OAuth2ServiceImpl implements OAuth2Service {
         return clientsParams.get(tenantId);
     }
 
-    private Map<TenantId, OAuth2ClientsParams> getAllOAuth2ClientsParams() {
+    // TODO this is just for test, maybe there's a better way to test it without exporting to interface
+    @Override
+    public Map<TenantId, OAuth2ClientsParams> getAllOAuth2ClientsParams() {
         OAuth2ClientsParams systemOAuth2ClientsParams = getSystemOAuth2ClientsParamsFromDb();
         ListenableFuture<Map<String, String>> jsonFuture = getAllOAuth2ClientsParamsAttribute();
         try {