diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index 4eaef82a..7cf71910 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -693,7 +693,7 @@ INST(USUBL,                  "USUBL, USUBL2",                             "0Q101
 INST(USUBW,                  "USUBW, USUBW2",                             "0Q101110zz1mmmmm001100nnnnnddddd")
 INST(RADDHN,                 "RADDHN, RADDHN2",                           "0Q101110zz1mmmmm010000nnnnnddddd")
 //INST(UABAL,                  "UABAL, UABAL2",                             "0Q101110zz1mmmmm010100nnnnnddddd")
-//INST(RSUBHN,                 "RSUBHN, RSUBHN2",                           "0Q101110zz1mmmmm011000nnnnnddddd")
+INST(RSUBHN,                 "RSUBHN, RSUBHN2",                           "0Q101110zz1mmmmm011000nnnnnddddd")
 //INST(UABDL,                  "UABDL, UABDL2",                             "0Q101110zz1mmmmm011100nnnnnddddd")
 //INST(UMLAL_vec,              "UMLAL, UMLAL2 (vector)",                    "0Q101110zz1mmmmm100000nnnnnddddd")
 //INST(UMLSL_vec,              "UMLSL, UMLSL2 (vector)",                    "0Q101110zz1mmmmm101000nnnnnddddd")
diff --git a/src/frontend/A64/translate/impl/simd_three_same.cpp b/src/frontend/A64/translate/impl/simd_three_same.cpp
index 670d99bc..b7f1921d 100644
--- a/src/frontend/A64/translate/impl/simd_three_same.cpp
+++ b/src/frontend/A64/translate/impl/simd_three_same.cpp
@@ -174,6 +174,15 @@ bool TranslatorVisitor::SUBHN(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
     return true;
 }
 
+bool TranslatorVisitor::RSUBHN(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
+    if (size == 0b11) {
+        return ReservedValue();
+    }
+
+    HighNarrowingOperation(*this, Q, size, Vm, Vn, Vd, HighNarrowingOp::Subtract, ExtraBehavior::Round);
+    return true;
+}
+
 bool TranslatorVisitor::ADDP_vec(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
     if (size == 0b11 && !Q) return ReservedValue();
     const size_t esize = 8 << size.ZeroExtend<size_t>();