diff --git a/radiant/brushmanip.cpp b/radiant/brushmanip.cpp
index 06382797..15cbc3b3 100644
--- a/radiant/brushmanip.cpp
+++ b/radiant/brushmanip.cpp
@@ -1163,6 +1163,9 @@ filter_brush_all_faces g_filter_brush_fullclip( &g_filter_face_fullclip );
 filter_face_shader g_filter_face_botclip( "textures/common/botclip" );
 filter_brush_all_faces g_filter_brush_botclip( &g_filter_face_botclip );
 
+filter_face_shader g_filter_face_donotenter( "textures/common/donotenter" );
+filter_brush_all_faces g_filter_brush_donotenter( &g_filter_face_donotenter );
+
 filter_face_shader_prefix g_filter_face_caulk( "textures/common/caulk" );
 filter_brush_all_faces g_filter_brush_caulk( &g_filter_face_caulk );
 
@@ -1219,6 +1222,7 @@ void BrushFilters_construct(){
 	add_brush_filter( g_filter_brush_fullclip, EXCLUDE_CLIP );
 	add_brush_filter( g_filter_brush_commonclip, EXCLUDE_CLIP );
 	add_brush_filter( g_filter_brush_botclip, EXCLUDE_BOTCLIP );
+	add_brush_filter( g_filter_brush_donotenter, EXCLUDE_BOTCLIP );
 	add_brush_filter( g_filter_brush_caulk, EXCLUDE_CAULK );
 	add_brush_filter( g_filter_brush_caulk_ja, EXCLUDE_CAULK );
 	add_face_filter( g_filter_face_caulk, EXCLUDE_CAULK );