diff --git a/External/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp b/External/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
index 4800e823f..345e76d9a 100644
--- a/External/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
+++ b/External/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
@@ -5802,7 +5802,7 @@ void OpDispatchBuilder::InstallHostSpecificOpcodeHandlers() {
     {OPD(1, 0b01, 0xD4), 1, &OpDispatchBuilder::AVXVectorALUOp<IR::OP_VADD, 8>},
     {OPD(1, 0b01, 0xD5), 1, &OpDispatchBuilder::AVXVectorALUOp<IR::OP_VSMUL, 2>},
     {OPD(1, 0b01, 0xD6), 1, &OpDispatchBuilder::MOVQOp},
-    {OPD(1, 0b01, 0xD7), 1, &OpDispatchBuilder::UnimplementedOp},
+    {OPD(1, 0b01, 0xD7), 1, &OpDispatchBuilder::MOVMSKOpOne},
 
     {OPD(1, 0b01, 0xD8), 1, &OpDispatchBuilder::AVXVectorALUOp<IR::OP_VUQSUB, 1>},
     {OPD(1, 0b01, 0xD9), 1, &OpDispatchBuilder::AVXVectorALUOp<IR::OP_VUQSUB, 2>},
diff --git a/External/FEXCore/Source/Interface/Core/X86Tables/VEXTables.cpp b/External/FEXCore/Source/Interface/Core/X86Tables/VEXTables.cpp
index 6b7acf577..2bfabeff4 100644
--- a/External/FEXCore/Source/Interface/Core/X86Tables/VEXTables.cpp
+++ b/External/FEXCore/Source/Interface/Core/X86Tables/VEXTables.cpp
@@ -207,7 +207,7 @@ void InitializeVEXTables() {
     {OPD(1, 0b01, 0xD4), 1, X86InstInfo{"VPADDQ",      TYPE_INST, GenFlagsSameSize(SIZE_128BIT) | FLAGS_MODRM | FLAGS_VEX_1ST_SRC | FLAGS_XMM_FLAGS, 0, nullptr}},
     {OPD(1, 0b01, 0xD5), 1, X86InstInfo{"VPMULLW",     TYPE_INST, GenFlagsSameSize(SIZE_128BIT) | FLAGS_MODRM | FLAGS_VEX_1ST_SRC | FLAGS_XMM_FLAGS, 0, nullptr}},
     {OPD(1, 0b01, 0xD6), 1, X86InstInfo{"VMOVQ",       TYPE_INST, GenFlagsSameSize(SIZE_64BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_XMM_FLAGS, 0, nullptr}},
-    {OPD(1, 0b01, 0xD7), 1, X86InstInfo{"VPMOVMSKB",   TYPE_UNDEC, FLAGS_MODRM | FLAGS_XMM_FLAGS | FLAGS_SF_DST_GPR | FLAGS_SF_MOD_REG_ONLY, 0, nullptr}},
+    {OPD(1, 0b01, 0xD7), 1, X86InstInfo{"VPMOVMSKB",   TYPE_INST, GenFlagsSizes(SIZE_32BIT, SIZE_128BIT) | FLAGS_MODRM | FLAGS_XMM_FLAGS | FLAGS_SF_DST_GPR | FLAGS_SF_MOD_REG_ONLY, 0, nullptr}},
 
     {OPD(1, 0b01, 0xD8), 1, X86InstInfo{"VPSUBUSB", TYPE_INST, GenFlagsSameSize(SIZE_128BIT) | FLAGS_MODRM | FLAGS_VEX_1ST_SRC | FLAGS_XMM_FLAGS, 0, nullptr}},
     {OPD(1, 0b01, 0xD9), 1, X86InstInfo{"VPSUBUSW", TYPE_INST, GenFlagsSameSize(SIZE_128BIT) | FLAGS_MODRM | FLAGS_VEX_1ST_SRC | FLAGS_XMM_FLAGS, 0, nullptr}},
diff --git a/unittests/ASM/VEX/vpmovmskb.asm b/unittests/ASM/VEX/vpmovmskb.asm
new file mode 100644
index 000000000..94ae20d5e
--- /dev/null
+++ b/unittests/ASM/VEX/vpmovmskb.asm
@@ -0,0 +1,71 @@
+%ifdef CONFIG
+{
+  "HostFeatures": ["AVX"],
+  "RegData": {
+    "RAX": "0x0",
+    "RBX": "0x0",
+    "RCX": "0xFFFF",
+    "RSI": "0xF0F0",
+    "RDI": "0x55AA",
+    "R8":  "0x0",
+    "R9":  "0x0",
+    "R10": "0xFFFFFFFF",
+    "R11": "0xF0F0F0F0",
+    "R12": "0x55AA55AA",
+    "XMM0": ["0x4142434445464748", "0x5152535455565758", "0x6162636465666768", "0x7172737475767778"],
+    "XMM1": ["0x0000000000000000", "0x0000000000000000", "0x0000000000000000", "0x0000000000000000"],
+    "XMM2": ["0xFFFFFFFFFFFFFFFF", "0xFFFFFFFFFFFFFFFF", "0xFFFFFFFFFFFFFFFF", "0xFFFFFFFFFFFFFFFF"],
+    "XMM3": ["0x8080808000000000", "0x8080808000000000", "0x8080808000000000", "0x8080808000000000"],
+    "XMM4": ["0x8000800080008000", "0x0080008000800080", "0x8000800080008000", "0x0080008000800080"]
+  }
+}
+%endif
+
+lea rdx, [rel .data]
+
+vmovapd ymm0, [rdx]
+vmovapd ymm1, [rdx + 32]
+vmovapd ymm2, [rdx + 32 * 2]
+vmovapd ymm3, [rdx + 32 * 3]
+vmovapd ymm4, [rdx + 32 * 4]
+
+vpmovmskb eax, xmm0
+vpmovmskb ebx, xmm1
+vpmovmskb ecx, xmm2
+vpmovmskb esi, xmm3
+vpmovmskb edi, xmm4
+
+vpmovmskb r8,  ymm0
+vpmovmskb r9,  ymm1
+vpmovmskb r10, ymm2
+vpmovmskb r11, ymm3
+vpmovmskb r12, ymm4
+
+hlt
+
+align 32
+.data:
+dq 0x4142434445464748
+dq 0x5152535455565758
+dq 0x6162636465666768
+dq 0x7172737475767778
+
+dq 0x0000000000000000
+dq 0x0000000000000000
+dq 0x0000000000000000
+dq 0x0000000000000000
+
+dq 0xFFFFFFFFFFFFFFFF
+dq 0xFFFFFFFFFFFFFFFF
+dq 0xFFFFFFFFFFFFFFFF
+dq 0xFFFFFFFFFFFFFFFF
+
+dq 0x8080808000000000
+dq 0x8080808000000000
+dq 0x8080808000000000
+dq 0x8080808000000000
+
+dq 0x8000800080008000
+dq 0x0080008000800080
+dq 0x8000800080008000
+dq 0x0080008000800080