diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index 0df09ddc..92ea0460 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -620,7 +620,7 @@ INST(XTN,                    "XTN, XTN2",                                 "0Q001
 //INST(SQNEG_2,                "SQNEG",                                     "0Q101110zz100000011110nnnnnddddd")
 //INST(CMGE_zero_2,            "CMGE (zero)",                               "0Q101110zz100000100010nnnnnddddd")
 //INST(CMLE_2,                 "CMLE (zero)",                               "0Q101110zz100000100110nnnnnddddd")
-//INST(NEG_2,                  "NEG (vector)",                              "0Q101110zz100000101110nnnnnddddd")
+INST(NEG_2,                  "NEG (vector)",                              "0Q101110zz100000101110nnnnnddddd")
 //INST(SQXTUN_2,               "SQXTUN, SQXTUN2",                           "0Q101110zz100001001010nnnnnddddd")
 //INST(SHLL,                   "SHLL, SHLL2",                               "0Q101110zz100001001110nnnnnddddd")
 //INST(UQXTN_2,                "UQXTN, UQXTN2",                             "0Q101110zz100001010010nnnnnddddd")
diff --git a/src/frontend/A64/translate/impl/simd_two_register_misc.cpp b/src/frontend/A64/translate/impl/simd_two_register_misc.cpp
index 1b648ef3..7a9726f3 100644
--- a/src/frontend/A64/translate/impl/simd_two_register_misc.cpp
+++ b/src/frontend/A64/translate/impl/simd_two_register_misc.cpp
@@ -81,6 +81,21 @@ bool TranslatorVisitor::XTN(bool Q, Imm<2> size, Vec Vn, Vec Vd) {
     return true;
 }
 
+bool TranslatorVisitor::NEG_2(bool Q, Imm<2> size, Vec Vn, Vec Vd) {
+    if (size == 0b11 && !Q) {
+        return ReservedValue();
+    }
+    const size_t esize = 8 << size.ZeroExtend<size_t>();
+    const size_t datasize = Q ? 128 : 64;
+
+    const IR::U128 operand = V(datasize, Vn);
+    const IR::U128 zero = ir.ZeroVector();
+    const IR::U128 result = ir.VectorSub(esize, zero, operand);
+
+    V(datasize, Vd, result);
+    return true;
+}
+
 bool TranslatorVisitor::NOT(bool Q, Vec Vn, Vec Vd) {
     const size_t datasize = Q ? 128 : 64;