diff --git a/api/src/org/apache/cloudstack/acl/APIChecker.java b/api/src/org/apache/cloudstack/acl/APIChecker.java
index 9e5c6c61108..0d0dfd1be4e 100644
--- a/api/src/org/apache/cloudstack/acl/APIChecker.java
+++ b/api/src/org/apache/cloudstack/acl/APIChecker.java
@@ -23,5 +23,8 @@ import com.cloud.utils.component.Adapter;
 // APIChecker checks the ownership and access control to API requests
 public interface APIChecker extends Adapter {
     // Interface for checking access for a role using apiname
+    // If true, apiChecker has checked the operation
+    // If false, apiChecker is unable to handle the operation or not implemented
+    // On exception, checkAccess failed don't allow
     boolean checkAccess(User user, String apiCommandName) throws PermissionDeniedException;
 }