diff --git a/src/FileNames.cpp b/src/FileNames.cpp
index a8673ae83..1636fc576 100644
--- a/src/FileNames.cpp
+++ b/src/FileNames.cpp
@@ -84,6 +84,21 @@ wxString FileNames::AutoSaveDir()
    return FileNames::MkDir(autoSaveDir.GetFullPath());
 }
 
+// The APP name has upercase first letter (so that Quit Audacity is correctly
+// capitalised on Mac, but we want lower case APP name in paths.
+// This function does that substitution, IF the last component of
+// the path is 'Audacity'.
+wxString FileNames::LowerCaseAppNameInPath( const wxString & dirIn){
+   wxString dir = dirIn;
+   // BUG 1577 Capitalisation of Audacity in path...
+   if( dir.EndsWith( "Audacity" ) )
+   {
+      int nChars = dir.Length() - wxString( "Audacity" ).Length();
+      dir = dir.Left( nChars ) + "audacity";
+   }
+   return dir;
+}
+
 wxString FileNames::DataDir()
 {
    // LLL:  Wouldn't you know that as of WX 2.6.2, there is a conflict
@@ -112,20 +127,21 @@ wxString FileNames::DataDir()
       } else
       {
          // Use OS-provided user data dir folder
-         wxString dataDir;
+         wxString dataDir( LowerCaseAppNameInPath( wxStandardPaths::Get().GetUserDataDir() ));
 #if defined( __WXGTK__ )
-         dataDir = wxStandardPaths::Get().GetUserDataDir() + wxT("-data");
-#else
-         dataDir = wxStandardPaths::Get().GetUserDataDir();
+         dataDir = dataDir + wxT("-data");
 #endif
-
          gDataDir = FileNames::MkDir(dataDir);
       }
    }
-
    return gDataDir;
 }
 
+wxString FileNames::ResourcesDir(){
+   wxString resourcesDir( LowerCaseAppNameInPath( wxStandardPaths::Get().GetResourcesDir() ));
+   return resourcesDir;
+}
+
 wxString FileNames::HtmlHelpDir()
 {
 #if defined(__WXMAC__)
@@ -136,14 +152,13 @@ wxString FileNames::HtmlHelpDir()
       // just remove the MacOSX part.
       exePath.RemoveLastDir();
 
+   //for mac this puts us within the .app: Audacity.app/Contents/SharedSupport/
    return wxFileName( exePath.GetPath()+wxT("/help/manual"), wxEmptyString ).GetFullPath();
 #else
    //linux goes into /*prefix*/share/audacity/
-   //windows goes into the dir containing the .exe
-   wxString exeDir = wxStandardPaths::Get().GetDataDir();
-
-   //for mac this puts us within the .app: Audacity.app/Contents/SharedSupport/
-   return wxFileName( exeDir+wxT("/help/manual"), wxEmptyString ).GetFullPath();
+   //windows (probably) goes into the dir containing the .exe
+   wxString dataDir = FileNames::LowerCaseAppNameInPath( wxStandardPaths::Get().GetDataDir());
+   return wxFileName( dataDir+wxT("/help/manual"), wxEmptyString ).GetFullPath();
 #endif
 }
 
@@ -195,7 +210,7 @@ wxString FileNames::BaseDir()
    baseDir = PlatformCompatibility::GetExecutablePath();
 #else
    // Linux goes into /*prefix*/share/audacity/
-   baseDir = wxStandardPaths::Get().GetDataDir();
+   baseDir = FileNames::LowerCaseAppNameInPath(wxStandardPaths::Get().GetDataDir());
 #endif
 
    return baseDir.GetPath();
diff --git a/src/FileNames.h b/src/FileNames.h
index 7db213c0e..bff19e1e8 100644
--- a/src/FileNames.h
+++ b/src/FileNames.h
@@ -28,12 +28,14 @@ public:
    // originally an ExportMultiple method. Append suffix if newName appears in otherNames.
    static void MakeNameUnique(wxArrayString &otherNames, wxFileName &newName);
 
+   static wxString LowerCaseAppNameInPath( const wxString & dirIn);
    /** \brief Audacity user data directory
     *
     * Where audacity keeps it's settings and other user data squirreled away,
     * by default ~/.audacity-data/ on Unix, Application Data/Audacity on
     * windows system */
    static wxString DataDir();
+   static wxString ResourcesDir();
    static wxString AutoSaveDir();
    static wxString HtmlHelpDir();
    static wxString HtmlHelpIndexFile(bool quick);
diff --git a/src/Prefs.cpp b/src/Prefs.cpp
index 9c5bc269c..677f18154 100755
--- a/src/Prefs.cpp
+++ b/src/Prefs.cpp
@@ -149,7 +149,9 @@ void InitPreferences()
    wxString langCode = gPrefs->Read(wxT("/Locale/Language"), wxEmptyString);
    bool writeLang = false;
 
-   const wxFileName fn(wxStandardPaths::Get().GetResourcesDir(), wxT("FirstTime.ini"));
+   const wxFileName fn(
+      FileNames::ResourcesDir(), 
+      wxT("FirstTime.ini"));
    if (fn.FileExists())   // it will exist if the (win) installer put it there
    {
       const wxString fullPath{fn.GetFullPath()};
diff --git a/src/effects/Equalization.cpp b/src/effects/Equalization.cpp
index eb98dfd85..a3252ade7 100644
--- a/src/effects/Equalization.cpp
+++ b/src/effects/Equalization.cpp
@@ -1466,9 +1466,8 @@ void EffectEqualization::UpdateDefaultCurves(bool updateAll /* false */)
    EQCurveArray userCurves = mCurves;
    mCurves.Clear();
    // We only wamt to look for the shipped EQDefaultCurves.xml
-   wxFileName fn = wxFileName(wxStandardPaths::Get().GetResourcesDir(),
-                              wxT("EQDefaultCurves.xml"));
-   wxLogDebug(wxT("Attempting to load EQDefaultCurves.xml from %s"),wxStandardPaths::Get().GetResourcesDir().c_str());
+   wxFileName fn = wxFileName(FileNames::ResourcesDir(), wxT("EQDefaultCurves.xml"));
+   wxLogDebug(wxT("Attempting to load EQDefaultCurves.xml from %s"),fn.GetFullPath().c_str());
    XMLFileReader reader;
 
    if(!reader.Parse(this, fn.GetFullPath())) {
@@ -1577,9 +1576,7 @@ bool EffectEqualization::GetDefaultFileName(wxFileName &fileName)
    if( !fileName.FileExists() )
    {  // Default file not found in the data dir.  Fall back to Resources dir.
       // See http://docs.wxwidgets.org/trunk/classwx_standard_paths.html#5514bf6288ee9f5a0acaf065762ad95d
-      static wxString resourcesDir;
-      resourcesDir = wxStandardPaths::Get().GetResourcesDir();
-      fileName = wxFileName( resourcesDir, wxT("EQDefaultCurves.xml") );
+      fileName = wxFileName( FileNames::ResourcesDir(), wxT("EQDefaultCurves.xml") );
    }
    if( !fileName.FileExists() )
    {