diff --git a/map.c b/map.c
index a73ae47..bfbf428 100644
--- a/map.c
+++ b/map.c
@@ -1009,7 +1009,10 @@ void adjustcellglyph(cell_t *c, glyph_t *g, enum CELLADJUSTTYPE how) {
 							}
 						}
 
-						if (c2->known && (typematches || hasdoor(c2)) ) {
+						// TODO: if it's a secret door, pretend it's a wall
+						//   if you don't know it.
+						//if (c2->known && (typematches || hasdoor(c2)) ) {
+						if (typematches || hasdoor(c2))  {
 							this = 1;
 							ndirslinked++;
 							// we want: