diff --git a/projects/software/calc.tal b/projects/software/calc.tal
index 54bf7f1..06be4ac 100644
--- a/projects/software/calc.tal
+++ b/projects/software/calc.tal
@@ -211,7 +211,7 @@ JMP2r
 
 @do-push ( -- )
 
-	.input/value LDZ2 ADD #00 GTH JMP JMP2r
+	.input/value LDZ2 #0000 GTH2 JMP JMP2r
 	.stack/length LDZ #07 LTH JMP JMP2r
 	#40 .Audio0/pitch DEO
 	.input/value LDZ2 ;push JSR2