diff --git a/xpcom/io/nsAppFileLocationProvider.cpp b/xpcom/io/nsAppFileLocationProvider.cpp
index e1350a2f0a2a..6732ed9fb5be 100644
--- a/xpcom/io/nsAppFileLocationProvider.cpp
+++ b/xpcom/io/nsAppFileLocationProvider.cpp
@@ -593,7 +593,7 @@ nsAppFileLocationProvider::GetFiles(const char *prop, nsISimpleEnumerator **_ret
     return rv;
 }
 
-#if defined(XP_MACOSX)
+#if defined(MOZ_WIDGET_COCOA)
 bool
 nsAppFileLocationProvider::IsOSXLeopard()
 {
diff --git a/xpcom/io/nsAppFileLocationProvider.h b/xpcom/io/nsAppFileLocationProvider.h
index 70b16c6e8feb..c6599ad5281e 100644
--- a/xpcom/io/nsAppFileLocationProvider.h
+++ b/xpcom/io/nsAppFileLocationProvider.h
@@ -72,7 +72,7 @@ protected:
    NS_METHOD            GetDefaultUserProfileRoot(nsILocalFile **aLocalFile,
                                                   bool aLocal = false);
 
-#if defined(XP_MACOSX)
+#if defined(MOZ_WIDGET_COCOA)
    static bool          IsOSXLeopard();
 #endif
 
diff --git a/xpcom/io/nsLocalFileUnix.cpp b/xpcom/io/nsLocalFileUnix.cpp
index 10a259287e69..2b7f2f4eb02e 100644
--- a/xpcom/io/nsLocalFileUnix.cpp
+++ b/xpcom/io/nsLocalFileUnix.cpp
@@ -95,7 +95,7 @@
 #include "nsIGnomeVFSService.h"
 #endif
 
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
 #include <Carbon/Carbon.h>
 #include "CocoaFileUtils.h"
 #include "prmem.h"
@@ -273,7 +273,7 @@ nsLocalFile::nsLocalFile(const nsLocalFile& other)
 {
 }
 
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
 NS_IMPL_THREADSAFE_ISUPPORTS4(nsLocalFile,
                               nsILocalFileMac,
                               nsILocalFile,
@@ -1445,7 +1445,7 @@ nsLocalFile::IsExecutable(bool *_retval)
     }
 
     // On OS X, then query Launch Services.
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
     // Certain Mac applications, such as Classic applications, which
     // run under Rosetta, might not have the +x mode bit but are still
     // considered to be executable by Launch Services (bug 646748).
@@ -1740,7 +1740,7 @@ nsLocalFile::GetPersistentDescriptor(nsACString &aPersistentDescriptor)
 NS_IMETHODIMP
 nsLocalFile::SetPersistentDescriptor(const nsACString &aPersistentDescriptor)
 {
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
     if (aPersistentDescriptor.IsEmpty())
         return NS_ERROR_INVALID_ARG;
 
@@ -1824,7 +1824,7 @@ nsLocalFile::Reveal()
         else 
             return gnomevfs->ShowURIForInput(dirPath);        
     }
-#elif defined(XP_MACOSX)
+#elif defined(MOZ_WIDGET_COCOA)
     CFURLRef url;
     if (NS_SUCCEEDED(GetCFURL(&url))) {
       nsresult rv = CocoaFileUtils::RevealFileInFinder(url);
@@ -1893,7 +1893,7 @@ nsLocalFile::Launch()
     fileUri.Append(mPath);
     mozilla::AndroidBridge* bridge = mozilla::AndroidBridge::Bridge();
     return bridge->OpenUriExternal(fileUri, type) ? NS_OK : NS_ERROR_FAILURE;
-#elif defined(XP_MACOSX)
+#elif defined(MOZ_WIDGET_COCOA)
     CFURLRef url;
     if (NS_SUCCEEDED(GetCFURL(&url))) {
         nsresult rv = CocoaFileUtils::OpenURL(url);
@@ -2056,7 +2056,7 @@ nsLocalFile::GlobalShutdown()
 
 // nsILocalFileMac
 
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
 
 static nsresult MacErrorMapper(OSErr inErr)
 {
diff --git a/xpcom/io/nsLocalFileUnix.h b/xpcom/io/nsLocalFileUnix.h
index 195d6964d36a..eb9b324090f3 100644
--- a/xpcom/io/nsLocalFileUnix.h
+++ b/xpcom/io/nsLocalFileUnix.h
@@ -53,7 +53,7 @@
 #include "nsReadableUtils.h"
 #include "nsIHashable.h"
 #include "nsIClassInfoImpl.h"
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
 #include "nsILocalFileMac.h"
 #endif
 
@@ -109,7 +109,7 @@
 
 
 class nsLocalFile :
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
                            public nsILocalFileMac,
 #else
                            public nsILocalFile,
@@ -126,7 +126,7 @@ public:
     NS_DECL_ISUPPORTS
     NS_DECL_NSIFILE
     NS_DECL_NSILOCALFILE
-#ifdef XP_MACOSX
+#ifdef MOZ_WIDGET_COCOA
     NS_DECL_NSILOCALFILEMAC
 #endif
     NS_DECL_NSIHASHABLE