diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index a519b85..2ed1868 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -6806,22 +6806,30 @@
 	      {
 		pos_T	*pos = getmark_buf(rex.reg_buf, t->state->val, FALSE);
 
-		// Compare the mark position to the match position.
-		result = (pos != NULL		     // mark doesn't exist
-			&& pos->lnum > 0    // mark isn't set in reg_buf
-			&& (pos->lnum == rex.lnum + rex.reg_firstlnum
-				? (pos->col == (colnr_T)(rex.input - rex.line)
+		// Compare the mark position to the match position, if the mark
+		// exists and mark is set in reg_buf.
+		if (pos != NULL && pos->lnum > 0)
+		{
+		    colnr_T pos_col = pos->lnum == rex.lnum + rex.reg_firstlnum
+							  && pos->col == MAXCOL
+				      ? (colnr_T)STRLEN(reg_getline(
+						pos->lnum - rex.reg_firstlnum))
+				      : pos->col;
+
+		    result = (pos->lnum == rex.lnum + rex.reg_firstlnum
+				? (pos_col == (colnr_T)(rex.input - rex.line)
 				    ? t->state->c == NFA_MARK
-				    : (pos->col < (colnr_T)(rex.input - rex.line)
+				    : (pos_col < (colnr_T)(rex.input - rex.line)
 					? t->state->c == NFA_MARK_GT
 					: t->state->c == NFA_MARK_LT))
 				: (pos->lnum < rex.lnum + rex.reg_firstlnum
 				    ? t->state->c == NFA_MARK_GT
-				    : t->state->c == NFA_MARK_LT)));
-		if (result)
-		{
-		    add_here = TRUE;
-		    add_state = t->state->out;
+				    : t->state->c == NFA_MARK_LT));
+		    if (result)
+		    {
+			add_here = TRUE;
+			add_state = t->state->out;
+		    }
 		}
 		break;
 	      }