diff --git a/unit/stk-test-data.h b/unit/stk-test-data.h
index bf49e8b8..427857a1 100644
--- a/unit/stk-test-data.h
+++ b/unit/stk-test-data.h
@@ -80,6 +80,11 @@ static const unsigned char display_text_response_181[] = {
 	0x81, 0x03, 0x01, 0x21, 0x80, 0x82, 0x02, 0x82, 0x81, 0x83, 0x01, 0x10,
 };
 
+static const unsigned char display_text_191[] = {
+	0xD0, 0x0F, 0x81, 0x03, 0x01, 0x21, 0x80, 0x82, 0x02, 0x81, 0x02, 0x8D,
+	0x00, 0x9E, 0x02, 0x00, 0x01
+};
+
 static const unsigned char display_text_response_191[] = {
 	0x81, 0x03, 0x01, 0x21, 0x80, 0x82, 0x02, 0x82, 0x81, 0x83, 0x01, 0x32,
 };