diff --git a/src/prefs/PrefsDialog.cpp b/src/prefs/PrefsDialog.cpp
index 6badff65d..4f6b55f82 100644
--- a/src/prefs/PrefsDialog.cpp
+++ b/src/prefs/PrefsDialog.cpp
@@ -417,14 +417,14 @@ class wxTreebookExt final : public wxTreebook
 {
 public:
    wxTreebookExt( wxWindow *parent,
-      wxWindowID id, const wxString &titlePrefix)
+      wxWindowID id, const TranslatableString &titlePrefix)
       : wxTreebook( parent, id )
       , mTitlePrefix(titlePrefix)
    {;};
    ~wxTreebookExt(){;};
    int ChangeSelection(size_t n) override;
    int SetSelection(size_t n) override;
-   const wxString mTitlePrefix;
+   const TranslatableString mTitlePrefix;
 };
 
 
@@ -439,7 +439,7 @@ int wxTreebookExt::ChangeSelection(size_t n) {
 int wxTreebookExt::SetSelection(size_t n)
 {
    int i = wxTreebook::SetSelection(n);
-   wxString Temp = wxString(mTitlePrefix) + GetPageText( n );
+   auto Temp = mTitlePrefix.Translation() + wxT(" ") + GetPageText( n );
    static_cast<wxDialog*>(GetParent())->SetTitle( Temp );
    static_cast<wxDialog*>(GetParent())->SetName( Temp );
 
@@ -532,8 +532,9 @@ PrefsDialog::Factories
 }
 
 
-PrefsDialog::PrefsDialog
-  (wxWindow * parent, const wxString &titlePrefix, Factories &factories)
+PrefsDialog::PrefsDialog(
+   wxWindow * parent,
+   const TranslatableString &titlePrefix, Factories &factories)
 :  wxDialogWrapper(parent, wxID_ANY, XO("Audacity Preferences"),
             wxDefaultPosition,
             wxDefaultSize,
@@ -694,7 +695,8 @@ int PrefsDialog::ShowModal()
       mCategories->SetSelection(selected);
    }
    else {
-      auto Temp = TranslatableString{ mTitlePrefix + mUniquePage->GetLabel() };
+      auto Temp = mTitlePrefix;
+      Temp.Join( TranslatableString{ mUniquePage->GetLabel() }, wxT(" ") );
       SetTitle(Temp);
       SetName(Temp);
    }
@@ -887,7 +889,7 @@ int PrefsDialog::GetSelectedPage() const
 }
 
 GlobalPrefsDialog::GlobalPrefsDialog(wxWindow * parent, Factories &factories)
-   : PrefsDialog(parent, _("Preferences: "), factories)
+   : PrefsDialog(parent, XO("Preferences:"), factories)
 {
 }
 
diff --git a/src/prefs/PrefsDialog.h b/src/prefs/PrefsDialog.h
index 624ee8220..4cef3c45f 100644
--- a/src/prefs/PrefsDialog.h
+++ b/src/prefs/PrefsDialog.h
@@ -48,7 +48,7 @@ class PrefsDialog /* not final */ : public wxDialogWrapper
    static Factories &DefaultFactories();
 
    PrefsDialog(wxWindow * parent,
-      const wxString &titlePrefix = _("Preferences: "),
+      const TranslatableString &titlePrefix = XO("Preferences:"),
       Factories &factories = DefaultFactories());
    virtual ~PrefsDialog();
 
@@ -82,7 +82,7 @@ private:
    wxTreebook *mCategories{};
    PrefsPanel *mUniquePage{};
    Factories &mFactories;
-   const wxString mTitlePrefix;
+   const TranslatableString mTitlePrefix;
 
    DECLARE_EVENT_TABLE()
 };
diff --git a/src/tracks/playabletrack/wavetrack/ui/WaveTrackControls.cpp b/src/tracks/playabletrack/wavetrack/ui/WaveTrackControls.cpp
index fb9c17580..cfb5888c8 100644
--- a/src/tracks/playabletrack/wavetrack/ui/WaveTrackControls.cpp
+++ b/src/tracks/playabletrack/wavetrack/ui/WaveTrackControls.cpp
@@ -779,8 +779,8 @@ void WaveTrackMenuTable::OnSpectrogramSettings(wxCommandEvent &)
    class ViewSettingsDialog final : public PrefsDialog
    {
    public:
-      ViewSettingsDialog
-         (wxWindow *parent, const wxString &title, PrefsDialog::Factories &factories,
+      ViewSettingsDialog(wxWindow *parent,
+         const TranslatableString &title, PrefsDialog::Factories &factories,
          int page)
          : PrefsDialog(parent, title, factories)
          , mPage(page)
@@ -817,8 +817,7 @@ void WaveTrackMenuTable::OnSpectrogramSettings(wxCommandEvent &)
       // (pTrack->GetDisplay() == WaveTrack::Spectrum) ? 1 :
       0;
 
-   /* i18n-hint: An item name followed by a value, with appropriate separating punctuation */
-   auto title = wxString::Format(_("%s: %s"), pTrack->GetName(), wxT(""));
+   auto title = XO("%s:").Format( pTrack->GetName() );
    ViewSettingsDialog dialog(mpData->pParent, title, factories, page);
 
    if (0 != dialog.ShowModal()) {
diff --git a/src/widgets/ASlider.cpp b/src/widgets/ASlider.cpp
index 7f6e53677..4ad068c21 100644
--- a/src/widgets/ASlider.cpp
+++ b/src/widgets/ASlider.cpp
@@ -982,6 +982,7 @@ wxString LWSlider::GetTip(float value) const
 #endif
       }
 
+      /* i18n-hint: An item name followed by a value, with appropriate separating punctuation */
       label = XO("%s: %s").Format( mName, val ).Translation();
    }
    else