diff --git a/src/arch/i386.ins b/src/arch/i386.ins
index 139563d..989c2fa 100644
--- a/src/arch/i386.ins
+++ b/src/arch/i386.ins
@@ -589,6 +589,15 @@
 { "fnop",	0xd9d0,		OP2F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
 /* FWAIT	0x9b		1					*/
 { "fwait",	0x9b,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+/* INSB		0x6c		1					*/
+{ "insb",	0x6c,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+#ifdef ARCH_i386_real
+/* INSW		0x6d		1					*/
+{ "insw",	0x6d,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+#else
+/* INSD		0x6d		1					*/
+{ "insd",	0x6d,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+#endif
 /* INT		0xcc		1     3					*/
 { "int",	0xcc,		OP1F, OP_C3,      AOT_NONE,  AOT_NONE	},
 /* INT		0xcd		1     imm8				*/
diff --git a/test/i386.S b/test/i386.S
index 19d3be2..1c099c9 100644
--- a/test/i386.S
+++ b/test/i386.S
@@ -240,6 +240,8 @@
 	fnclex
 	fninit
 	fwait
+	insb
+	insd
 	int	$0x3
 	int	$0x4
 	int	$0x42