diff --git a/src/compatibility.cpp b/src/compatibility.cpp
index f145b5ad9..839d60dc5 100644
--- a/src/compatibility.cpp
+++ b/src/compatibility.cpp
@@ -102,6 +102,7 @@ static FCompatOption Options[] =
 	{ "resetplayerspeed",		BCOMPATF_RESETPLAYERSPEED, SLOT_BCOMPAT },
 	{ "vileghosts",				BCOMPATF_VILEGHOSTS, SLOT_BCOMPAT },
 	{ "ignoreteleporttags",		BCOMPATF_BADTELEPORTERS, SLOT_BCOMPAT },
+	{ "rebuildnodes",			BCOMPATF_REBUILDNODES, SLOT_BCOMPAT },
 
 	// list copied from g_mapinfo.cpp
 	{ "shorttex",				COMPATF_SHORTTEX, SLOT_COMPAT },
diff --git a/src/doomdef.h b/src/doomdef.h
index f7e6c959e..3a3c31e6a 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -348,6 +348,7 @@ enum
 	BCOMPATF_VILEGHOSTS			= 1 << 2,	// Monsters' radius and height aren't restored properly when resurrected.
 	BCOMPATF_BADTELEPORTERS		= 1 << 3,	// Ignore tags on Teleport specials
 	BCOMPATF_BADPORTALS			= 1 << 4,	// Restores the old unstable portal behavior
+	BCOMPATF_REBUILDNODES		= 1 << 5,	// Force node rebuild
 };
 
 // phares 3/20/98:
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index ee596a74c..4cd337ca5 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -3607,6 +3607,10 @@ void P_SetupLevel (char *lumpname, int position)
 			level.maptype = MAPTYPE_UDMF;
 		}
 		CheckCompatibility(map);
+		if (ib_compatflags & BCOMPATF_REBUILDNODES)
+		{
+			ForceNodeBuild = true;
+		}
 		T_LoadScripts(map);
 
 		if (!map->HasBehavior || map->isText)
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index f381155bd..c6c682f21 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -330,3 +330,8 @@ F481922F4881F74760F3C0437FD5EDD0 // map03
 	setwallyscale 716 front bot 1.090909
 	setwallyscale 717 front bot 1.090909
 }
+
+65A1EB4C87386F290816660A52932FF1 // Master Levels, garrison.wad
+{
+	rebuildnodes
+}