diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index d3c43723f..6a300f4d7 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -302,7 +302,7 @@ MapData *P_OpenMapData(const char * mapname)
 
 			// This case can only happen if the lump is inside a real WAD file.
 			// As such any special handling for other types of lumps is skipped.
-			map->MapLumps[0].Reader = Wads.ReopenLumpNum(lump_name);
+			map->MapLumps[0].Reader = map->file = Wads.ReopenLumpNum(lump_name);
 			map->Encrypted = Wads.IsEncryptedFile(lump_name);
 
 			if (map->Encrypted)
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index 6b352c7ef..d87f593f0 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -285,7 +285,7 @@ F481922F4881F74760F3C0437FD5EDD0 // map03
 	clearlinespecial 1108
 }
 
-D41D8CD98F00B204E9800998ECF8427E // Khorus, map08
+5B862477519B21B30059A466F2FF6460 // Khorus, map08
 {
 	// This map uses a voodoo conveyor with slanted walls to shunt the
 	// voodoo doll into side areas. For some reason, this voodoo doll