diff --git a/src/commands/OpenSaveCommands.cpp b/src/commands/OpenSaveCommands.cpp
index 2edcb63c0..93069d161 100644
--- a/src/commands/OpenSaveCommands.cpp
+++ b/src/commands/OpenSaveCommands.cpp
@@ -63,8 +63,8 @@ bool OpenProjectCommand::Apply(const CommandContext & context){
 
 bool SaveProjectCommand::DefineParams( ShuttleParams & S ){
    S.Define( mFileName, wxT("Filename"),  "name.aup" );
-   S.OptionalN(bHasAddToHistory).Define( mbAddToHistory, wxT("AddToHistory"),  false );
-   S.OptionalN(bHasCompress).Define( mbCompress, wxT("Compress"),  false );
+   S.Define( mbAddToHistory, wxT("AddToHistory"),  false );
+   S.Define( mbCompress, wxT("Compress"),  false );
    return true;
 }
 
diff --git a/src/commands/PreferenceCommands.cpp b/src/commands/PreferenceCommands.cpp
index ebc6749eb..b913c3c65 100644
--- a/src/commands/PreferenceCommands.cpp
+++ b/src/commands/PreferenceCommands.cpp
@@ -50,9 +50,9 @@ bool GetPreferenceCommand::Apply(const CommandContext & context)
 }
 
 bool SetPreferenceCommand::DefineParams( ShuttleParams & S ){
-   S.Define(                       mName,    wxT("Name"),    wxT("") );
-   S.Define(                       mValue,   wxT("Value"),   wxT("") );
-   S.OptionalN(bHasReload).Define( mbReload, wxT("Reload"),  false );
+   S.Define(    mName,   wxT("Name"),    wxT("") );
+   S.Define(   mValue,   wxT("Value"),   wxT("") );
+   S.Define( mbReload,   wxT("Reload"),  false );
    return true;
 }
 
diff --git a/src/commands/ScreenshotCommand.cpp b/src/commands/ScreenshotCommand.cpp
index 2a91df723..70025bcef 100644
--- a/src/commands/ScreenshotCommand.cpp
+++ b/src/commands/ScreenshotCommand.cpp
@@ -98,8 +98,8 @@ kBackgroundStrings[ ScreenshotCommand::nBackgrounds ] =
 bool ScreenshotCommand::DefineParams( ShuttleParams & S ){ 
    S.Define(                               mPath,        wxT("Path"),         wxT(""));
    S.DefineEnum(                           mWhat,        wxT("CaptureWhat"),  kwindow,kCaptureWhatStrings, nCaptureWhats );
-   S.OptionalN(bHasBackground).DefineEnum( mBack,        wxT("Background"),   kNone, kBackgroundStrings, nBackgrounds );
-   S.OptionalN(bHasBringToTop).Define(     mbBringToTop, wxT("ToTop"), true );
+   S.DefineEnum(                           mBack,        wxT("Background"),   kNone, kBackgroundStrings, nBackgrounds );
+   S.Define(                               mbBringToTop, wxT("ToTop"), true );
    return true;
 };