--- tbl_term.c	2020-08-18 12:35:27.290953791 +0200
+++ tbl_term.c	2020-08-18 12:35:23.450952148 +0200
@@ -626,7 +626,7 @@
 
 		lw = cpp == NULL || cpn == NULL ||
 		    (cpn->pos != TBL_CELL_DOWN &&
-		     (dpn == NULL || strcmp(dpn->string, "\\^") != 0))
+		     (dpn == NULL || dpn->pos == TBL_DATA_NONE || strcmp(dpn->string, "\\^") != 0))
 		    ? hw : 0;
 		tbl_direct_border(tp, BHORIZ * lw,
 		    col->width + col->spacing / 2);
@@ -670,7 +670,7 @@
 
 		rw = cpp == NULL || cpn == NULL ||
 		    (cpn->pos != TBL_CELL_DOWN &&
-		     (dpn == NULL || strcmp(dpn->string, "\\^") != 0))
+		     (dpn == NULL || dpn->pos == TBL_DATA_NONE || strcmp(dpn->string, "\\^") != 0))
 		    ? hw : 0;
 
 		/* The line crossing at the end of this column. */