diff --git a/sys/cddl/dev/dtrace/amd64/dis_tables.c b/sys/cddl/dev/dtrace/amd64/dis_tables.c
index 5a5bc25c02c3..7f5c2cd776fa 100644
--- a/sys/cddl/dev/dtrace/amd64/dis_tables.c
+++ b/sys/cddl/dev/dtrace/amd64/dis_tables.c
@@ -815,7 +815,7 @@ const instable_t dis_op0F[16][16] = {
 /*  [10]  */	TNSZ("movups",XMMO,16),	TNSZ("movups",XMMOS,16),TNSZ("movlps",XMMO,8),	TNSZ("movlps",XMMOS,8),
 /*  [14]  */	TNSZ("unpcklps",XMMO,16),TNSZ("unpckhps",XMMO,16),TNSZ("movhps",XMMOM,8),TNSZ("movhps",XMMOMS,8),
 /*  [18]  */	IND(dis_op0F18),	INVALID,		INVALID,		INVALID,
-/*  [1C]  */	INVALID,		INVALID,		INVALID,		INVALID,
+/*  [1C]  */	INVALID,		INVALID,		INVALID,		TNS("nopw", M),
 }, {
 /*  [20]  */	TSy("mov",SREG),	TSy("mov",SREG),	TSy("mov",SREG),	TSy("mov",SREG),
 /*  [24]  */	TSx("mov",SREG),	INVALID,		TSx("mov",SREG),	INVALID,
diff --git a/sys/cddl/dev/dtrace/i386/dis_tables.c b/sys/cddl/dev/dtrace/i386/dis_tables.c
index 5a5bc25c02c3..7f5c2cd776fa 100644
--- a/sys/cddl/dev/dtrace/i386/dis_tables.c
+++ b/sys/cddl/dev/dtrace/i386/dis_tables.c
@@ -815,7 +815,7 @@ const instable_t dis_op0F[16][16] = {
 /*  [10]  */	TNSZ("movups",XMMO,16),	TNSZ("movups",XMMOS,16),TNSZ("movlps",XMMO,8),	TNSZ("movlps",XMMOS,8),
 /*  [14]  */	TNSZ("unpcklps",XMMO,16),TNSZ("unpckhps",XMMO,16),TNSZ("movhps",XMMOM,8),TNSZ("movhps",XMMOMS,8),
 /*  [18]  */	IND(dis_op0F18),	INVALID,		INVALID,		INVALID,
-/*  [1C]  */	INVALID,		INVALID,		INVALID,		INVALID,
+/*  [1C]  */	INVALID,		INVALID,		INVALID,		TNS("nopw", M),
 }, {
 /*  [20]  */	TSy("mov",SREG),	TSy("mov",SREG),	TSy("mov",SREG),	TSy("mov",SREG),
 /*  [24]  */	TSx("mov",SREG),	INVALID,		TSx("mov",SREG),	INVALID,