diff --git a/SandboxiePlus/SandMan/SandMan.cpp b/SandboxiePlus/SandMan/SandMan.cpp
index 890c2ed5..e60189cc 100644
--- a/SandboxiePlus/SandMan/SandMan.cpp
+++ b/SandboxiePlus/SandMan/SandMan.cpp
@@ -1652,8 +1652,13 @@ void CSandMan::OnMessage(const QString& MsgData)
 
 				}
 			}
+			else {
+				QMessageBox::warning(g_GUIParent, tr("Sandboxie-Plus Warning"), tr("You typed a wrong box name!Nothing was changed."), QMessageBox::Ok, 0);
+			}
+		}
+		else {
+			QMessageBox::warning(g_GUIParent, tr("Sandboxie-Plus Warning"), tr("Users canceled this operation."), QMessageBox::Yes, 0);
 		}
-
 	}
 	else if (Message.left(4) == "Run:")
 	{