diff --git a/src/terminal/draw.c b/src/terminal/draw.c
index 9d8ae96ef..8c3f3d2d6 100644
--- a/src/terminal/draw.c
+++ b/src/terminal/draw.c
@@ -46,8 +46,10 @@ draw_border_cross(struct terminal *term, int x, int y,
 		  enum border_cross_direction dir, struct color_pair *color)
 {
 	static unsigned char border_trans[2][4] = {
+		/* Used for BORDER_X_{RIGHT,LEFT}: */
 		{ BORDER_SVLINE, BORDER_SRTEE, BORDER_SLTEE, BORDER_SCROSS },
-		{ BORDER_SHLINE, /* ? */ 0xc2, /* ? */ 0xc1, BORDER_SCROSS },
+		/* Used for BORDER_X_{DOWN,UP}: */
+		{ BORDER_SHLINE, BORDER_SDTEE, BORDER_SUTEE, BORDER_SCROSS },
 	};
 	struct screen_char *screen_char = get_char(term, x, y);
 	unsigned int d;
diff --git a/src/terminal/draw.h b/src/terminal/draw.h
index 680d66fac..a771ac00b 100644
--- a/src/terminal/draw.h
+++ b/src/terminal/draw.h
@@ -52,6 +52,8 @@ enum border_char {
 	BORDER_SDRCORNER = 217,
 	BORDER_SLTEE	 = 180, /* => the tee points to the left => -| */
 	BORDER_SRTEE	 = 195,
+	BORDER_SDTEE	 = 194,
+	BORDER_SUTEE	 = 193,
 	BORDER_SVLINE	 = 179,
 	BORDER_SHLINE	 = 196,
 	BORDER_SCROSS	 = 197, /* + */