diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index 90d4aee2..6a433754 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -609,7 +609,7 @@ INST(FABS_2,                 "FABS (vector)",                             "0Q001
 //INST(FCVTPS_3,               "FCVTPS (vector)",                           "0Q00111011111001101010nnnnnddddd")
 //INST(FCVTPS_4,               "FCVTPS (vector)",                           "0Q0011101z100001101010nnnnnddddd")
 //INST(FCVTZS_int_3,           "FCVTZS (vector, integer)",                  "0Q00111011111001101110nnnnnddddd")
-//INST(FCVTZS_int_4,           "FCVTZS (vector, integer)",                  "0Q0011101z100001101110nnnnnddddd")
+INST(FCVTZS_int_4,           "FCVTZS (vector, integer)",                  "0Q0011101z100001101110nnnnnddddd")
 //INST(URECPE,                 "URECPE",                                    "0Q0011101z100001110010nnnnnddddd")
 //INST(FRECPE_3,               "FRECPE",                                    "0Q00111011111001110110nnnnnddddd")
 INST(FRECPE_4,               "FRECPE",                                    "0Q0011101z100001110110nnnnnddddd")
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 e91e9e28..723d5941 100644
--- a/src/frontend/A64/translate/impl/simd_two_register_misc.cpp
+++ b/src/frontend/A64/translate/impl/simd_two_register_misc.cpp
@@ -234,6 +234,21 @@ bool TranslatorVisitor::FCMLT_4(bool Q, bool sz, Vec Vn, Vec Vd) {
     return FPCompareAgainstZero(*this, Q, sz, Vn, Vd, ComparisonType::LT);
 }
 
+bool TranslatorVisitor::FCVTZS_int_4(bool Q, bool sz, Vec Vn, Vec Vd) {
+    if (sz && !Q) {
+        return ReservedValue();
+    }
+
+    const size_t datasize = Q ? 128 : 64;
+    const size_t esize = sz ? 64 : 32;
+
+    const IR::U128 operand = V(datasize, Vn);
+    const IR::U128 result = ir.FPVectorToSignedFixed(esize, operand, 0, FP::RoundingMode::TowardsZero);
+
+    V(datasize, Vd, result);
+    return true;
+}
+
 bool TranslatorVisitor::FRECPE_4(bool Q, bool sz, Vec Vn, Vec Vd) {
     if (sz && !Q) {
         return ReservedValue();