diff --git a/ethernet_interface.hpp b/ethernet_interface.hpp
index 5109e42..caa042e 100644
--- a/ethernet_interface.hpp
+++ b/ethernet_interface.hpp
@@ -121,7 +121,7 @@
 
         /** @brief sets the MAC address.
          *  @param[in] value - MAC address which needs to be set on the system.
-         *  @returns macAddress of the interface.
+         *  @returns macAddress of the interface or throws an error.
          */
         std::string mACAddress(std::string value) override;