diff --git a/src/sim/syscall_desc.hh b/src/sim/syscall_desc.hh
index 8bc3929815..a00b1f325f 100644
--- a/src/sim/syscall_desc.hh
+++ b/src/sim/syscall_desc.hh
@@ -150,50 +150,4 @@ class SyscallDescABI : public SyscallDesc
     using SyscallDesc::SyscallDesc;
 };
 
-struct DefaultSyscallABI
-{
-    using Position = int;
-};
-
-namespace GuestABI
-{
-
-template <>
-struct Result<DefaultSyscallABI, SyscallReturn>
-{
-    static void
-    store(ThreadContext *tc, const SyscallReturn &ret)
-    {
-        auto *process = tc->getProcessPtr();
-        process->setSyscallReturn(tc, ret);
-    }
-};
-
-template <typename Arg>
-struct Argument<DefaultSyscallABI, Arg,
-    typename std::enable_if<std::is_integral<Arg>::value>::type>
-{
-    static Arg
-    get(ThreadContext *tc, DefaultSyscallABI::Position &position)
-    {
-        auto *process = tc->getProcessPtr();
-        return process->getSyscallArg(tc, position);
-    }
-};
-
-template <typename Arg>
-struct Argument<DefaultSyscallABI, Arg,
-    typename std::enable_if<std::is_pointer<Arg>::value>::type>
-{
-    static Arg
-    get(ThreadContext *tc, DefaultSyscallABI::Position &position)
-    {
-        auto *process = tc->getProcessPtr();
-        RegVal reg = process->getSyscallArg(tc, position);
-        return (Arg)(uintptr_t)(reg);
-    }
-};
-
-} // namespace GuestABI
-
 #endif // __SIM_SYSCALL_DESC_HH__