diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index 8c0e0bf9..dce40eab 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -456,7 +456,7 @@ INST(ADD_1,                  "ADD (vector)",                              "01011
 //INST(SQDMULH_vec_1,          "SQDMULH (vector)",                          "01011110zz1mmmmm101101nnnnnddddd")
 //INST(UQADD_1,                "UQADD",                                     "01111110zz1mmmmm000011nnnnnddddd")
 //INST(UQSUB_1,                "UQSUB",                                     "01111110zz1mmmmm001011nnnnnddddd")
-//INST(CMHI_1,                 "CMHI (register)",                           "01111110zz1mmmmm001101nnnnnddddd")
+INST(CMHI_1,                 "CMHI (register)",                           "01111110zz1mmmmm001101nnnnnddddd")
 //INST(CMHS_1,                 "CMHS (register)",                           "01111110zz1mmmmm001111nnnnnddddd")
 //INST(USHL_1,                 "USHL",                                      "01111110zz1mmmmm010001nnnnnddddd")
 //INST(UQSHL_reg_1,            "UQSHL (register)",                          "01111110zz1mmmmm010011nnnnnddddd")
diff --git a/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp b/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp
index f38d788c..5bfdb24e 100644
--- a/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp
+++ b/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp
@@ -12,6 +12,7 @@ namespace {
 enum class ComparisonType {
     GE,
     GT,
+    HI,
 };
 
 bool ScalarCompare(TranslatorVisitor& v, Imm<2> size, Vec Vm, Vec Vn, Vec Vd, ComparisonType type) {
@@ -30,8 +31,10 @@ bool ScalarCompare(TranslatorVisitor& v, Imm<2> size, Vec Vm, Vec Vn, Vec Vd, Co
         case ComparisonType::GE:
             return v.ir.VectorGreaterEqualSigned(esize, operand1, operand2);
         case ComparisonType::GT:
-        default:
             return v.ir.VectorGreaterSigned(esize, operand1, operand2);
+        case ComparisonType::HI:
+        default:
+            return v.ir.VectorGreaterUnsigned(esize, operand1, operand2);
         }
     }();
 
@@ -62,6 +65,10 @@ bool TranslatorVisitor::CMGT_reg_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
     return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::GT);
 }
 
+bool TranslatorVisitor::CMHI_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
+    return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::HI);
+}
+
 bool TranslatorVisitor::SUB_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
     if (size != 0b11) {
         return ReservedValue();