diff --git a/TODO b/TODO
index b188462..d787489 100644
--- a/TODO
+++ b/TODO
@@ -2,18 +2,18 @@ Updater Tasks:
 
  * Elevation for Linux [done - needs testing]
  * Set file permissions for Unix [done]
+ * Elevation for Mac [done]
+ * Basic functionality for Mac [done]
+ * Unit test working under Mac [done]
  * Set file permissions for Windows
  * Basic functionality for Windows
- * Basic functionality for Mac
  * Elevation for Windows
- * Elevation for Mac
  * Win32 UI for Windows
  * Cocoa UI for Mac
  * Gtk or Qt UI for Linux
  * Retry/cancel support if updater cannot overwrite file (eg. due to
    file being in use by Microsoft Word or another application)
  * Unit test working under Windows
- * Unit test working under Mac
  * Start new application once installation is finished
 
 Mendeley Desktop <= 1.0 auto-update system compatibility:
diff --git a/src/ProcessUtils.cpp b/src/ProcessUtils.cpp
index f4449a5..e2d84ae 100644
--- a/src/ProcessUtils.cpp
+++ b/src/ProcessUtils.cpp
@@ -144,6 +144,12 @@ void ProcessUtils::runElevatedLinux(const std::string& executable,
 void ProcessUtils::runElevatedMac(const std::string& executable,
 						const std::list<std::string>& args)
 {
+	// request elevation using the Security Service.
+	//
+	// This only works when the application is being run directly
+	// from the Mac.  Attempting to run the app via a remote SSH session
+	// (for example) will fail with an interaction-not-allowed error
+
 	OSStatus status;
 	AuthorizationRef authorizationRef;