Apple  has struck a deal to use Swiss railway operator SBB’s trademark station clock design on iPads and iPhones. SBB, which holds the trademark for a 1944 design raised concern when the  clock appeared in Apple’s iOS 6 operating system.

“For the use of the clockface on certain Apple devices such as iPads and iPhones, the parties have negotiated an arrangement that enables Apple to use the SBB station clock under a license agreement,” SBB said on Friday. Both parties have agreed to keep the terms of the deal private.

“It is a design icon that has obviously lost none of its appeal in the digital age,” SBB added. “Even now, it symbolizes the innovation and reliability that are key qualities attributed to both SBB and Switzerland as a whole.”