diff --git a/neo/tools/compilers/dmap/dmap.cpp b/neo/tools/compilers/dmap/dmap.cpp
index 1faeb6d7..cf88fe08 100644
--- a/neo/tools/compilers/dmap/dmap.cpp
+++ b/neo/tools/compilers/dmap/dmap.cpp
@@ -202,6 +202,7 @@ void ResetDmapGlobals()
 	dmapGlobals.mapLights.Clear();
 	dmapGlobals.verbose = false;
 	dmapGlobals.glview = false;
+	dmapGlobals.asciiTree = false;
 	dmapGlobals.noOptimize = false;
 	dmapGlobals.verboseentities = false;
 	dmapGlobals.noCurves = false;
@@ -271,6 +272,10 @@ void Dmap( const idCmdArgs& args )
 		{
 			dmapGlobals.glview = true;
 		}
+		else if( !idStr::Icmp( s, "asciiTree" ) )
+		{
+			dmapGlobals.asciiTree = true;
+		}
 		else if( !idStr::Icmp( s, "v" ) )
 		{
 			common->Printf( "verbose = true\n" );
diff --git a/neo/tools/compilers/dmap/dmap.h b/neo/tools/compilers/dmap/dmap.h
index d92cbb2f..491c1127 100644
--- a/neo/tools/compilers/dmap/dmap.h
+++ b/neo/tools/compilers/dmap/dmap.h
@@ -279,6 +279,7 @@ typedef struct
 	bool	verbose;
 
 	bool	glview;
+	bool	asciiTree;			// BSP tree visualization in the .proc file
 	bool	noOptimize;
 	bool	verboseentities;
 	bool	noCurves;
diff --git a/neo/tools/compilers/dmap/output.cpp b/neo/tools/compilers/dmap/output.cpp
index 0a540b70..3a3a3001 100644
--- a/neo/tools/compilers/dmap/output.cpp
+++ b/neo/tools/compilers/dmap/output.cpp
@@ -847,7 +847,7 @@ static void WriteOutputNodes( node_t* node, idFile* procFile )
 	procFile->WriteFloatString( "/* negative child numbers are areas: (-1-child) */\n" );
 
 	// RB: draw an extra ASCII BSP tree visualization for YouTube tutorial
-	if( dmapGlobals.glview )
+	if( dmapGlobals.asciiTree )
 	{
 		WriteVisualBSPTree( node, procFile );
 	}