diff --git a/src/backend/A64/a32_emit_a64.cpp b/src/backend/A64/a32_emit_a64.cpp
index 1bd7f06e..9adda38e 100644
--- a/src/backend/A64/a32_emit_a64.cpp
+++ b/src/backend/A64/a32_emit_a64.cpp
@@ -1048,15 +1048,15 @@ void A32EmitA64::EmitA32CoprocSendOneWord(A32EmitContext& ctx, IR::Inst* inst) {
     }
 
     auto action = coproc->CompileSendOneWord(two, opc1, CRn, CRm, opc2);
-    switch (action.which()) {
+    switch (action.index()) {
     case 0:
         EmitCoprocessorException();
         return;
     case 1:
-        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, boost::get<A32::Coprocessor::Callback>(action), nullptr, args[1]);
+        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, std::get<A32::Coprocessor::Callback>(action), nullptr, args[1]);
         return;
     case 2: {
-        u32* destination_ptr = boost::get<u32*>(action);
+        u32* destination_ptr = std::get<u32*>(action);
 
         ARM64Reg reg_word = DecodeReg(ctx.reg_alloc.UseGpr(args[1]));
         ARM64Reg reg_destination_addr = ctx.reg_alloc.ScratchGpr();
@@ -1087,15 +1087,15 @@ void A32EmitA64::EmitA32CoprocSendTwoWords(A32EmitContext& ctx, IR::Inst* inst)
     }
 
     auto action = coproc->CompileSendTwoWords(two, opc, CRm);
-    switch (action.which()) {
+    switch (action.index()) {
     case 0:
         EmitCoprocessorException();
         return;
     case 1:
-        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, boost::get<A32::Coprocessor::Callback>(action), nullptr, args[1], args[2]);
+        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, std::get<A32::Coprocessor::Callback>(action), nullptr, args[1], args[2]);
         return;
     case 2: {
-        auto destination_ptrs = boost::get<std::array<u32*, 2>>(action);
+        auto destination_ptrs = std::get<std::array<u32*, 2>>(action);
 
         ARM64Reg reg_word1 = DecodeReg(ctx.reg_alloc.UseGpr(args[1]));
         ARM64Reg reg_word2 = DecodeReg(ctx.reg_alloc.UseGpr(args[2]));
@@ -1130,15 +1130,15 @@ void A32EmitA64::EmitA32CoprocGetOneWord(A32EmitContext& ctx, IR::Inst* inst) {
     }
 
     auto action = coproc->CompileGetOneWord(two, opc1, CRn, CRm, opc2);
-    switch (action.which()) {
+    switch (action.index()) {
     case 0:
         EmitCoprocessorException();
         return;
     case 1:
-        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, boost::get<A32::Coprocessor::Callback>(action), inst);
+        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, std::get<A32::Coprocessor::Callback>(action), inst);
         return;
     case 2: {
-        u32* source_ptr = boost::get<u32*>(action);
+        u32* source_ptr = std::get<u32*>(action);
 
         ARM64Reg reg_word = DecodeReg(ctx.reg_alloc.ScratchGpr());
         ARM64Reg reg_source_addr = ctx.reg_alloc.ScratchGpr();
@@ -1170,15 +1170,15 @@ void A32EmitA64::EmitA32CoprocGetTwoWords(A32EmitContext& ctx, IR::Inst* inst) {
     }
 
     auto action = coproc->CompileGetTwoWords(two, opc, CRm);
-    switch (action.which()) {
+    switch (action.index()) {
     case 0:
         EmitCoprocessorException();
         return;
     case 1:
-        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, boost::get<A32::Coprocessor::Callback>(action), inst);
+        CallCoprocCallback(code, ctx.reg_alloc, jit_interface, std::get<A32::Coprocessor::Callback>(action), inst);
         return;
     case 2: {
-        auto source_ptrs = boost::get<std::array<u32*, 2>>(action);
+        auto source_ptrs = std::get<std::array<u32*, 2>>(action);
 
         ARM64Reg reg_result = ctx.reg_alloc.ScratchGpr();
         ARM64Reg reg_destination_addr = ctx.reg_alloc.ScratchGpr();