diff --git a/src/sys/sop.s b/src/sys/sop.s
index 047a1ba..ada9499 100644
--- a/src/sys/sop.s
+++ b/src/sys/sop.s
@@ -39,7 +39,7 @@ lls = 0640600			" EAE: long left shift
 llss = 0660600			" EAE: long left shift, signed
 als = 0640700			" EAE: AC left shift
 alss = 0660700			" EAE: AC left shift, signed
-mul = 0653323			" EAE: multiply
+mul = 0653122			" EAE: multiply
 idiv = 0653323			" EAE: integer divide
 lacq = 0641002			" EAE: load AC with MQ
 clq = 0650000			" EAE: clear MQ