diff --git a/Packages/vChewing_Shared/Sources/Shared/Shared.swift b/Packages/vChewing_Shared/Sources/Shared/Shared.swift
index 7ee84e86..3b92b211 100644
--- a/Packages/vChewing_Shared/Sources/Shared/Shared.swift
+++ b/Packages/vChewing_Shared/Sources/Shared/Shared.swift
@@ -59,8 +59,8 @@ public enum UserDef: String, CaseIterable {
   case kAlsoConfirmAssociatedCandidatesByEnter = "AlsoConfirmAssociatedCandidatesByEnter"
   case kKeepReadingUponCompositionError = "KeepReadingUponCompositionError"
   case kTogglingAlphanumericalModeWithLShift = "TogglingAlphanumericalModeWithLShift"
+  case kTogglingAlphanumericalModeWithRShift = "TogglingAlphanumericalModeWithRShift"
   case kUpperCaseLetterKeyBehavior = "UpperCaseLetterKeyBehavior"
-  case kTogglingAlphanumericalModeWithRShift = "togglingAlphanumericalModeWithRShift"
   case kConsolidateContextOnCandidateSelection = "ConsolidateContextOnCandidateSelection"
   case kHardenVerticalPunctuations = "HardenVerticalPunctuations"
   case kTrimUnfinishedReadingsOnCommit = "TrimUnfinishedReadingsOnCommit"