diff --git a/src/term.c b/src/term.c
index abc8a38..0f80e9c 100644
--- a/src/term.c
+++ b/src/term.c
@@ -4826,7 +4826,9 @@
 	// This may cause some flicker.  Alternative would be to set "t_8u"
 	// here if the terminal is expected to support it, but that might
 	// conflict with what was set in the .vimrc.
-	if (term_props[TPR_UNDERLINE_RGB].tpr_status != TPR_YES && *T_8U != NUL)
+	if (term_props[TPR_UNDERLINE_RGB].tpr_status != TPR_YES
+			&& *T_8U != NUL
+			&& !option_was_set((char_u *)"t_8u"))
 	{
 	    set_string_option_direct((char_u *)"t_8u", -1, (char_u *)"",
 								  OPT_FREE, 0);
diff --git a/src/version.c b/src/version.c
index 6bed251..83d8e1b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4798,
+/**/
     4797,
 /**/
     4796,