diff --git a/pt3_player/pt3_lib.s b/pt3_player/pt3_lib.s
index 319f1180..4b811af6 100644
--- a/pt3_player/pt3_lib.s
+++ b/pt3_player/pt3_lib.s
@@ -1030,6 +1030,10 @@ decode_case_not_10:
 
 	sta	pt3_envelope_type
 
+	lda	#$78
+	sta	pt3_envelope_type_old
+
+
 	; get next byte
 	iny
 	lda	(PATTERN_L),Y
@@ -1175,6 +1179,9 @@ decode_case_bx_higher:
 	sbc	#1
 	sta	pt3_envelope_type	; envelope_type=(current_val&0xf)-1;
 
+	lda	#$78
+	sta	pt3_envelope_type_old
+
 	; get next byte
 	iny
 	lda	(PATTERN_L),Y