diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c88702a2..56fdcb1a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -108,6 +108,7 @@ add_library(dynarmic
     frontend/A64/translate/impl/simd_scalar_two_register_misc.cpp
     frontend/A64/translate/impl/simd_sha.cpp
     frontend/A64/translate/impl/simd_shift_by_immediate.cpp
+    frontend/A64/translate/impl/simd_three_different.cpp
     frontend/A64/translate/impl/simd_three_same.cpp
     frontend/A64/translate/impl/simd_two_register_misc.cpp
     frontend/A64/translate/impl/sys_dc.cpp
diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index aa5c4923..e2955317 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -688,7 +688,7 @@ INST(NOT,                    "NOT",                                       "0Q101
 //INST(SMULL_vec,              "SMULL, SMULL2 (vector)",                    "0Q001110zz1mmmmm110000nnnnnddddd")
 //INST(PMULL,                  "PMULL, PMULL2",                             "0Q001110zz1mmmmm111000nnnnnddddd")
 //INST(UADDL,                  "UADDL, UADDL2",                             "0Q101110zz1mmmmm000000nnnnnddddd")
-//INST(UADDW,                  "UADDW, UADDW2",                             "0Q101110zz1mmmmm000100nnnnnddddd")
+INST(UADDW,                  "UADDW, UADDW2",                             "0Q101110zz1mmmmm000100nnnnnddddd")
 //INST(USUBL,                  "USUBL, USUBL2",                             "0Q101110zz1mmmmm001000nnnnnddddd")
 //INST(USUBW,                  "USUBW, USUBW2",                             "0Q101110zz1mmmmm001100nnnnnddddd")
 //INST(RADDHN,                 "RADDHN, RADDHN2",                           "0Q101110zz1mmmmm010000nnnnnddddd")
diff --git a/src/frontend/A64/translate/impl/impl.h b/src/frontend/A64/translate/impl/impl.h
index 03e3277a..a57200e7 100644
--- a/src/frontend/A64/translate/impl/impl.h
+++ b/src/frontend/A64/translate/impl/impl.h
@@ -815,7 +815,7 @@ struct TranslatorVisitor final {
     bool SMULL_vec(bool Q, Imm<2> size, Reg Rm, Reg Rn, Vec Vd);
     bool PMULL(bool Q, Imm<2> size, Reg Rm, Reg Rn, Vec Vd);
     bool UADDL(bool Q, Imm<2> size, Reg Rm, Reg Rn, Vec Vd);
-    bool UADDW(bool Q, Imm<2> size, Reg Rm, Vec Vn, Vec Vd);
+    bool UADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd);
     bool USUBL(bool Q, Imm<2> size, Reg Rm, Reg Rn, Vec Vd);
     bool USUBW(bool Q, Imm<2> size, Reg Rm, Vec Vn, Vec Vd);
     bool RADDHN(bool Q, Imm<2> size, Vec Vm, Vec Vn, Reg Rd);
diff --git a/src/frontend/A64/translate/impl/simd_three_different.cpp b/src/frontend/A64/translate/impl/simd_three_different.cpp
new file mode 100644
index 00000000..182a7331
--- /dev/null
+++ b/src/frontend/A64/translate/impl/simd_three_different.cpp
@@ -0,0 +1,28 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2018 MerryMage
+ * This software may be used and distributed according to the terms of the GNU
+ * General Public License version 2 or any later version.
+ */
+
+#include "frontend/A64/translate/impl/impl.h"
+
+namespace Dynarmic::A64 {
+
+bool TranslatorVisitor::UADDW(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
+    if (size == 0b11) {
+        return ReservedValue();
+    }
+
+    const size_t esize = 8 << size.ZeroExtend<size_t>();
+    const size_t part = Q ? 1 : 0;
+
+    const IR::U128 operand1 = V(128, Vn);
+    const IR::U128 operand2 = ir.VectorZeroExtend(esize, Vpart(64, Vm, part));
+    const IR::U128 result = ir.VectorAdd(esize * 2, operand1, operand2);
+
+    V(128, Vd, result);
+
+    return true;
+}
+
+} // namespace Dynarmic::A64