diff --git a/Docs/Changelog_sm5.txt b/Docs/Changelog_sm5.txt
index 711f0415fe..8454851334 100644
--- a/Docs/Changelog_sm5.txt
+++ b/Docs/Changelog_sm5.txt
@@ -5,13 +5,14 @@ from StepMania 4 alpha 5 to sm-ssc v1.2.5, see Changelog_sm-ssc.txt.
 ________________________________________________________________________________
 
 ================================================================================
-StepMania 5.0 $next | 20111xxx
+StepMania 5.0 alpha 1 | 201112xx
 --------------------------------------------------------------------------------
 
 2011/12/27
 ----------
 * [MusicWheel] Add IsRouletting Lua binding. [AJ]
 * [WheelBase] Add GetNumWheelItems Lua binding. [AJ]
+* [LuaManager] Remove GetOSName Lua binding; use GetArchName instead. [AJ]
 
 2011/12/26
 ----------
diff --git a/src/LuaManager.cpp b/src/LuaManager.cpp
index 32b9bce59e..98e2bec749 100644
--- a/src/LuaManager.cpp
+++ b/src/LuaManager.cpp
@@ -971,22 +971,6 @@ extern const char *const version_time;
 LuaFunction( VersionDate, (RString) version_date );
 LuaFunction( VersionTime, (RString) version_time );
 
-static RString GetOSName()
-{
-	RString system;
-	#if defined(WIN32)
-		system = "Windows";
-	#elif defined(LINUX)
-		system = "Linux";
-	#elif defined(DARWIN)
-		system = "Mac";
-	#else
-		system = "Unknown";
-	#endif
-	return system;
-}
-LuaFunction( GetOSName, GetOSName() );
-
 static float scale( float x, float l1, float h1, float l2, float h2 )
 {
 	return SCALE( x, l1, h1, l2, h2 );