diff --git a/Components/AppleClock/AppleClock.hpp b/Components/AppleClock/AppleClock.hpp
index 2ba395650..e153f2eae 100644
--- a/Components/AppleClock/AppleClock.hpp
+++ b/Components/AppleClock/AppleClock.hpp
@@ -257,7 +257,10 @@ class ParallelClock: public ClockStorage {
 				// A no-op for now.
 			} else {
 				// Write to the RTC. Which in this implementation also sets up a future read.
-				data_ = uint8_t(perform(data_));
+				const auto result = perform(data_);
+				if(result != NoResult) {
+					data_ = uint8_t(result);
+				}
 			}
 
 			// MAGIC! The transaction took 0 seconds.