diff --git a/src/AboutDialog.cpp b/src/AboutDialog.cpp
index d6d204610..98d32c4a7 100644
--- a/src/AboutDialog.cpp
+++ b/src/AboutDialog.cpp
@@ -639,10 +639,14 @@ void AboutDialog::PopulateInformationPage( ShuttleGui & S )
    // Current date
    AddBuildinfoRow(&informationStr, _("Program build date: "), __TDATE__);
    AddBuildinfoRow(&informationStr, _("Commit Id:"), REV_IDENT );
+
+   // Not translated in 2.3.1.
+   wxString bits = (sizeof(void*) == 8) ? ", 64 bits" : "";
+
 #ifdef __WXDEBUG__
-   AddBuildinfoRow(&informationStr, _("Build type:"), _("Debug build"));
+   AddBuildinfoRow(&informationStr, _("Build type:"), wxString(_("Debug build"))+bits );
 #else
-   AddBuildinfoRow(&informationStr, _("Build type:"), _("Release build"));
+   AddBuildinfoRow(&informationStr, _("Build type:"), wxString(_("Release build"))+bits);
 #endif
 
 #ifdef _MSC_FULL_VER
diff --git a/src/export/ExportMP3.cpp b/src/export/ExportMP3.cpp
index d881e3c6e..87771b4a0 100644
--- a/src/export/ExportMP3.cpp
+++ b/src/export/ExportMP3.cpp
@@ -1468,11 +1468,15 @@ wxString MP3Exporter::GetLibraryPath()
 
 wxString MP3Exporter::GetLibraryName()
 {
+   if (sizeof(void*) == 8)
+      return wxT("libmp3lame64bit.dylib");
    return wxT("libmp3lame.dylib");
 }
 
 wxString MP3Exporter::GetLibraryTypeString()
 {
+   if (sizeof(void*) == 8)
+      return wxString(_("Only libmp3lame64bit.dylib|libmp3lame64bit.dylib|Dynamic Libraries (*.dylib)|*.dylib|All Files (*)|*"));
    return wxString(_("Only libmp3lame.dylib|libmp3lame.dylib|Dynamic Libraries (*.dylib)|*.dylib|All Files (*)|*"));
 }