diff --git a/src/d_main.cpp b/src/d_main.cpp
index 4c0d2537dc..d6d53dd77a 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -556,7 +556,7 @@ CUSTOM_CVAR(Int, compatmode, 0, CVAR_ARCHIVE|CVAR_NOINITCALL)
 	case 1:	// Doom2.exe compatible with a few relaxed settings
 		v = COMPATF_SHORTTEX|COMPATF_STAIRINDEX|COMPATF_USEBLOCKING|COMPATF_NODOORLIGHT|COMPATF_SPRITESORT|
 			COMPATF_TRACE|COMPATF_MISSILECLIP|COMPATF_SOUNDTARGET|COMPATF_DEHHEALTH|COMPATF_CROSSDROPOFF|
-			COMPATF_LIGHT;
+			COMPATF_LIGHT|COMPATF_MASKEDMIDTEX;
 		w= COMPATF2_FLOORMOVE;
 		break;
 
@@ -569,7 +569,7 @@ CUSTOM_CVAR(Int, compatmode, 0, CVAR_ARCHIVE|CVAR_NOINITCALL)
 		break;
 
 	case 3: // Boom compat mode
-		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP;
+		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP|COMPATF_MASKEDMIDTEX;
 		break;
 
 	case 4: // Old ZDoom compat mode
@@ -579,12 +579,12 @@ CUSTOM_CVAR(Int, compatmode, 0, CVAR_ARCHIVE|CVAR_NOINITCALL)
 
 	case 5: // MBF compat mode
 		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP|COMPATF_MUSHROOM|
-			COMPATF_MBFMONSTERMOVE|COMPATF_NOBLOCKFRIENDS;
+			COMPATF_MBFMONSTERMOVE|COMPATF_NOBLOCKFRIENDS|COMPATF_MASKEDMIDTEX;
 		break;
 
 	case 6:	// Boom with some added settings to reenable some 'broken' behavior
 		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP|COMPATF_NO_PASSMOBJ|
-			COMPATF_INVISIBILITY|COMPATF_CORPSEGIBS|COMPATF_HITSCAN|COMPATF_WALLRUN|COMPATF_NOTOSSDROPS;
+			COMPATF_INVISIBILITY|COMPATF_CORPSEGIBS|COMPATF_HITSCAN|COMPATF_WALLRUN|COMPATF_NOTOSSDROPS|COMPATF_MASKEDMIDTEX;
 		w = COMPATF2_POINTONLINE;
 		break;