diff --git a/src/ripple/protocol/jss.h b/src/ripple/protocol/jss.h
index 350752468..440d859ad 100644
--- a/src/ripple/protocol/jss.h
+++ b/src/ripple/protocol/jss.h
@@ -50,7 +50,6 @@ JSS(AccountSet);     // transaction type.
 JSS(Amendments);     // ledger type.
 JSS(Amount);         // in: TransactionSign; field.
 JSS(Authorize);      // field
-JSS(Alarm);
 JSS(Blob);
 JSS(Check);        // ledger type.
 JSS(CheckCancel);  // transaction type.