diff -Naur lyx-2.1.4.orig/src/Text.cpp lyx-2.1.4/src/Text.cpp
--- lyx-2.1.4.orig/src/Text.cpp	2015-10-09 19:13:47.000000000 +0300
+++ lyx-2.1.4/src/Text.cpp	2016-11-02 15:23:43.813679102 +0300
@@ -1009,7 +1009,7 @@
 	// (workaround for bug 9012)
 	// Don't do it for listings inset, since InsetListings::latex() tries
 	// to switch to a usable encoding which works in many cases (bug 9102).
-	if (cur.paragraph().isPassThru() && owner_->lyxCode() != LISTINGS_CODE &&
+	if (cur.paragraph().isPassThru() && owner_->lyxCode() != LISTINGS_CODE && owner_->lyxCode() != ERT_CODE &&
 	    cur.current_font.language()) {
 		Encoding const * e = cur.current_font.language()->encoding();
 		if (!e->encodable(c)) {