diff --git a/source/common/gamecontrol.cpp b/source/common/gamecontrol.cpp
index 211c8d3ea..489b2dcc5 100644
--- a/source/common/gamecontrol.cpp
+++ b/source/common/gamecontrol.cpp
@@ -380,17 +380,15 @@ int GameMain()
 //
 //==========================================================================
 
-#define LOCALIZED_STRING(s) "$" s
-
 void SetDefaultStrings()
 {
-	if ((g_gameType & GAMEFLAG_DUKE) && (g_gameType & GAMEFLAG_SHAREWARE))
+	if ((g_gameType & GAMEFLAG_DUKE) && fileSystem.FindFile("E4L1.MAP") < 0)
 	{
-		// Shareware does not define episodes
+		// Pre-Atomic releases do not define this.
 		gVolumeNames[0] = "$L.A. Meltdown";
 		gVolumeNames[1] = "$Lunar Apocalypse";
 		gVolumeNames[2] = "$Shrapnel City";
-		gVolumeNames[3] = "$The Birth";
+		if (g_gameType & GAMEFLAG_SHAREWARE) gVolumeNames[3] = "$The Birth";
 		gSkillNames[0] = "$Piece of Cake";
 		gSkillNames[1] = "$Let's Rock";
 		gSkillNames[2] = "$Come get Some";