diff --git a/decode-test.c b/decode-test.c
index f1f5638..32b5df9 100644
--- a/decode-test.c
+++ b/decode-test.c
@@ -527,6 +527,10 @@ main(int argc, char** argv)
     TEST("\xc4\xe3\x71\x4b\xc2\x70", "vblendvpd xmm0, xmm1, xmm2, xmm7");
     TEST32("\xc4\xe3\x75\x4b\xc2\x80", "vblendvpd ymm0, ymm1, ymm2, ymm0"); // Bit 7 is ignored
     TEST64("\xc4\xe3\x75\x4b\xc2\x80", "vblendvpd ymm0, ymm1, ymm2, ymm8");
+    TEST32("\xc4\xc3\xfd\x00\xc9\x12", "vpermq ymm1, ymm1, 0x12"); // VEX.B ignored
+    TEST64("\xc4\xc3\xfd\x00\xc9\x12", "vpermq ymm1, ymm9, 0x12");
+    TEST("\xc4\xc3\x7d\x00\xc9\x12", "UD"); // VEX.W = 0 is UD
+    TEST("\xc4\xe3\xfd\x01\xcf\x12", "vpermpd ymm1, ymm7, 0x12");
 
     TEST("\xc4\xe2\x79\xdb\xc1", "vaesimc xmm0, xmm1");
     TEST("\xc4\xe2\x7d\xdb\xc1", "UD"); // VEX.L != 0
diff --git a/encode-test.inc b/encode-test.inc
index c402b88..e014a63 100644
--- a/encode-test.inc
+++ b/encode-test.inc
@@ -213,6 +213,8 @@ TEST("\xc4\xe2\x71\x2e\x17", VMASKMOVPS128mrr, 0, FE_MEM(FE_DI, 0, FE_NOREG, 0),
 TEST("\xc4\xe2\x75\x2e\x17", VMASKMOVPS256mrr, 0, FE_MEM(FE_DI, 0, FE_NOREG, 0), FE_XMM1, FE_XMM2);
 TEST("\xc5\xf1\x71\xd7\x02", VPSRLW128rri, 0, FE_XMM1, FE_XMM7, 0x2);
 TEST("\xc5\xf5\x71\xd7\x02", VPSRLW256rri, 0, FE_XMM1, FE_XMM7, 0x2);
+TEST("\xc4\xc3\xfd\x00\xc9\x12", VPERMQ256rri, 0, FE_XMM1, FE_XMM9, 0x12);
+TEST("\xc4\xe3\xfd\x01\xcf\x12", VPERMPD256rri, 0, FE_XMM1, FE_XMM7, 0x12);
 
 // Test RVMR encoding
 TEST("\xc4\xe3\x71\x4a\xc2\x30", VBLENDVPS128rrrr, 0, FE_XMM0, FE_XMM1, FE_XMM2, FE_XMM3);
diff --git a/instrs.txt b/instrs.txt
index a474044..da23bc9 100644
--- a/instrs.txt
+++ b/instrs.txt
@@ -1240,8 +1240,8 @@ VEX.66.W0.0f38be       RVM  Vx  Hx  Wx  -   VFNMSUB231PS        F=FMA
 VEX.66.W1.0f38be       RVM  Vx  Hx  Wx  -   VFNMSUB231PD        F=FMA
 VEX.66.W0.LIG.0f38bf   RVM  Vdq Hdq Wss -   VFNMSUB231SS        F=FMA
 VEX.66.W1.LIG.0f38bf   RVM  Vdq Hdq Wsd -   VFNMSUB231SD        F=FMA
-VEX.66.W1.L1.0f3a00    VMI  Hx  Wx  Ib  -   VPERMQ              F=AVX2
-VEX.66.W1.L1.0f3a01    VMI  Hx  Wx  Ib  -   VPERMPD             F=AVX2
+VEX.66.W1.L1.0f3a00    RMI  Vx  Wx  Ib  -   VPERMQ              F=AVX2
+VEX.66.W1.L1.0f3a01    RMI  Vx  Wx  Ib  -   VPERMPD             F=AVX2
 VEX.66.W0.0f3a02       RVMI Vx  Hx  Wx  Ib  VPBLENDD            F=AVX2
 VEX.66.W0.0f3a04       RMI  Vx  Wx  Ib  -   VPERMILPS           F=AVX
 VEX.66.W0.0f3a05       RMI  Vx  Wx  Ib  -   VPERMILPD           F=AVX