diff --git a/src/OpenSHC/Audio/mss.func.hpp b/src/OpenSHC/Audio/mss.func.hpp
index c099d2a..7d585ab 100644
--- a/src/OpenSHC/Audio/mss.func.hpp
+++ b/src/OpenSHC/Audio/mss.func.hpp
@@ -21,8 +21,8 @@ namespace Audio {
             Address::SHC_3BB0A8C1_0x0047B510, &OpenSHC::Audio::MSS::SndSystemTimeCallback)
         SndSystemTimeCallback;
 
-        MACRO_FUNCTION_RESOLVER(undefined4(__stdcall*)(), false, Address::SHC_3BB0A8C1_0x0057E160,
-            &OpenSHC::Audio::MSS::RegisterMilesAILShutdown)
+        MACRO_FUNCTION_RESOLVER(
+            int(__cdecl*)(), false, Address::SHC_3BB0A8C1_0x0057E160, &OpenSHC::Audio::MSS::RegisterMilesAILShutdown)
         RegisterMilesAILShutdown;
 
     } // namespace MSS_Func
diff --git a/src/OpenSHC/Audio/mss.hpp b/src/OpenSHC/Audio/mss.hpp
index 23db321..faef485 100644
--- a/src/OpenSHC/Audio/mss.hpp
+++ b/src/OpenSHC/Audio/mss.hpp
@@ -16,7 +16,7 @@ namespace Audio {
 
         void __stdcall SndSystemTimeCallback(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2);
 
-        undefined4 __stdcall RegisterMilesAILShutdown();
+        int __cdecl RegisterMilesAILShutdown();
 
     } // namespace MSS
 } // namespace Audio
diff --git a/src/OpenSHC/Audio/mss/RegisterMilesAILShutdown.cpp b/src/OpenSHC/Audio/mss/RegisterMilesAILShutdown.cpp
new file mode 100644
index 0000000..dfa7378
--- /dev/null
+++ b/src/OpenSHC/Audio/mss/RegisterMilesAILShutdown.cpp
@@ -0,0 +1,22 @@
+#include "../mss.func.hpp"
+
+#include "OpenSHC/OS.func.hpp"
+
+#include "Mss32.h"
+
+namespace OpenSHC {
+namespace Audio {
+    namespace MSS {
+
+        void __cdecl AIL_shutdown_proxy() { AIL_shutdown(); }
+
+        // FUNCTION: STRONGHOLDCRUSADER 0x0057E160
+        int __cdecl RegisterMilesAILShutdown()
+        {
+            MACRO_CALL(OS_Func::_atexit)(AIL_shutdown_proxy);
+            return 0;
+        }
+
+    }
+}
+}
diff --git a/src/OpenSHC/OS.func.hpp b/src/OpenSHC/OS.func.hpp
index e1d376c..fd57411 100644
--- a/src/OpenSHC/OS.func.hpp
+++ b/src/OpenSHC/OS.func.hpp
@@ -50,8 +50,8 @@ namespace OS_Func {
         Address::SHC_3BB0A8C1_0x0057F8EE, &OpenSHC::OS::__stricmp)
     __stricmp;
 
-    MACRO_FUNCTION_RESOLVER(
-        int(__cdecl*)(void* param_1), REIMPLEMENTED_CRT, Address::SHC_3BB0A8C1_0x0057FA62, &OpenSHC::OS::_atexit)
+    MACRO_FUNCTION_RESOLVER(int(__cdecl*)(void(__cdecl* func)()), REIMPLEMENTED_CRT, Address::SHC_3BB0A8C1_0x0057FA62,
+        &OpenSHC::OS::_atexit)
     _atexit;
 
     MACRO_FUNCTION_RESOLVER(
diff --git a/src/OpenSHC/OS.hpp b/src/OpenSHC/OS.hpp
index ca61c82..b9083ff 100644
--- a/src/OpenSHC/OS.hpp
+++ b/src/OpenSHC/OS.hpp
@@ -37,7 +37,7 @@ namespace OS {
 
     int __cdecl __stricmp(char* _Str1, char* _Str2);
 
-    int __cdecl _atexit(void* param_1);
+    int __cdecl _atexit(void(__cdecl* func)());
 
     void __cdecl _free_base(void* _Memory);
 
diff --git a/src/OpenSHC/OS/OS.cpp b/src/OpenSHC/OS/OS.cpp
index c4ba1e0..b8a7001 100644
--- a/src/OpenSHC/OS/OS.cpp
+++ b/src/OpenSHC/OS/OS.cpp
@@ -42,7 +42,7 @@ namespace OS {
     int __stricmp(char* _Str1, char* _Str2) { return _stricmp(_Str1, _Str2); }
 
     // STUB: STRONGHOLDCRUSADER 0x0057FA62
-    int _atexit(void* param_1) { return atexit(reinterpret_cast<void(__cdecl*)()>(param_1)); }
+    int _atexit(void(__cdecl* func)()) { return atexit(func); }
 
     // This seems to be the games main free function
     // STUB: STRONGHOLDCRUSADER 0x0057FA74
diff --git a/status/addresses-SHC-3BB0A8C1.txt b/status/addresses-SHC-3BB0A8C1.txt
index bf59bb0..fe692bf 100644
--- a/status/addresses-SHC-3BB0A8C1.txt
+++ b/status/addresses-SHC-3BB0A8C1.txt
@@ -32703,7 +32703,7 @@ SHC_3BB0A8C1_0x0057DFE0 | 0.0% | Pending
 SHC_3BB0A8C1_0x0057E020 | 0.0% | Pending
 SHC_3BB0A8C1_0x0057E120 | 0.0% | Pending
 SHC_3BB0A8C1_0x0057E158 | 0.0% | Pending
-SHC_3BB0A8C1_0x0057E160 | 0.0% | Pending
+SHC_3BB0A8C1_0x0057E160 | 100.0% | Reimplemented
 SHC_3BB0A8C1_0x0057E170 | 0.0% | Pending
 SHC_3BB0A8C1_0x0057E180 | 0.0% | Pending
 SHC_3BB0A8C1_0x0057E28F | 0.0% | Pending