diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index e2516a30d..1c2307ec0 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -332,7 +332,7 @@ F481922F4881F74760F3C0437FD5EDD0 // map03
 	setactivation 455 16		// SPAC_Push
 }
 
-
+8B2AC8D4DB4A49A5DCCBB067E04434D6 // The Hell Factory Hub One, map04
 65A1EB4C87386F290816660A52932FF1 // Master Levels, garrison.wad
 {
 	rebuildnodes