diff --git a/Source/externs.m b/Source/externs.m
index 4d5bc8c46..de78676e6 100644
--- a/Source/externs.m
+++ b/Source/externs.m
@@ -313,7 +313,7 @@ NSString *NSPrintFaxSendTime = @"NSPrintFaxSendTime";
 NSString *NSPrintFaxTrimPageEnds = @"NSPrintFaxTrimPageEnds";
 NSString *NSPrintFaxUseCoverSheet = @"NSPrintFaxUseCoverSheet";
 NSString *NSPrintFirstPage = @"NSFirstPage";
-NSString *NSPrintHorizonalPagination = @"NSHorizonalPagination";
+NSString *NSPrintHorizontalPagination = @"NSHorizontalPagination";
 NSString *NSPrintHorizontallyCentered = @"NSHorizontallyCentered";
 NSString *NSPrintJobDisposition = @"NSJobDisposition";
 NSString *NSPrintJobFeatures = @"NSJobFeatures";