diff --git a/Source/Core/Core/Boot/Boot_BS2Emu.cpp b/Source/Core/Core/Boot/Boot_BS2Emu.cpp
index faae0e704d..1e1f9d993b 100644
--- a/Source/Core/Core/Boot/Boot_BS2Emu.cpp
+++ b/Source/Core/Core/Boot/Boot_BS2Emu.cpp
@@ -592,7 +592,7 @@ bool CBoot::EmulatedBS2_Wii(Core::System& system, const Core::CPUThreadGuard& gu
     return false;
 
   // The Apploader probably just overwrote values needed for RAM Override.  Run this again!
-  IOS::HLE::RAMOverrideForIOSMemoryValues(IOS::HLE::MemorySetupType::IOSReload);
+  IOS::HLE::RAMOverrideForIOSMemoryValues(memory, IOS::HLE::MemorySetupType::IOSReload);
 
   // Warning: This call will set incorrect running game metadata if our volume parameter
   // doesn't point to the same disc as the one that's inserted in the emulated disc drive!
diff --git a/Source/Core/Core/IOS/IOS.cpp b/Source/Core/Core/IOS/IOS.cpp
index 67aa1037c6..d1f6b9d661 100644
--- a/Source/Core/Core/IOS/IOS.cpp
+++ b/Source/Core/Core/IOS/IOS.cpp
@@ -140,8 +140,7 @@ static bool SetupMemory(Memory::MemoryManager& memory, u64 ios_title_id, MemoryS
     memory.Write_U32(target_imv->ios_reserved_begin, ADDR_IOS_RESERVED_BEGIN);
     memory.Write_U32(target_imv->ios_reserved_end, ADDR_IOS_RESERVED_END);
 
-    RAMOverrideForIOSMemoryValues(setup_type);
-
+    RAMOverrideForIOSMemoryValues(memory, setup_type);
     return true;
   }
 
@@ -184,8 +183,7 @@ static bool SetupMemory(Memory::MemoryManager& memory, u64 ios_title_id, MemoryS
   memory.Write_U32(target_imv->mem1_arena_end, ADDR_LEGACY_ARENA_HIGH);
   memory.Write_U32(target_imv->mem1_simulated_size, ADDR_LEGACY_MEM_SIM_SIZE);
 
-  RAMOverrideForIOSMemoryValues(setup_type);
-
+  RAMOverrideForIOSMemoryValues(memory, setup_type);
   return true;
 }
 
@@ -225,15 +223,12 @@ static void ReleasePPCAncast(Core::System& system)
   system.GetPPCState().pc = ESPRESSO_ANCAST_LOCATION_VIRT + sizeof(EspressoAncastHeader);
 }
 
-void RAMOverrideForIOSMemoryValues(MemorySetupType setup_type)
+void RAMOverrideForIOSMemoryValues(Memory::MemoryManager& memory, MemorySetupType setup_type)
 {
   // Don't touch anything if the feature isn't enabled.
   if (!Config::Get(Config::MAIN_RAM_OVERRIDE_ENABLE))
     return;
 
-  auto& system = Core::System::GetInstance();
-  auto& memory = system.GetMemory();
-
   // Some unstated constants that can be inferred.
   const u32 ipc_buffer_size =
       memory.Read_U32(ADDR_IPC_BUFFER_END) - memory.Read_U32(ADDR_IPC_BUFFER_BEGIN);
diff --git a/Source/Core/Core/IOS/IOS.h b/Source/Core/Core/IOS/IOS.h
index e3ebbfb99e..04da1459cb 100644
--- a/Source/Core/Core/IOS/IOS.h
+++ b/Source/Core/Core/IOS/IOS.h
@@ -23,6 +23,10 @@ namespace Core
 {
 class System;
 }
+namespace Memory
+{
+class MemoryManager;
+}
 
 namespace IOS::HLE
 {
@@ -109,7 +113,7 @@ enum class HangPPC : bool
   Yes = true,
 };
 
-void RAMOverrideForIOSMemoryValues(MemorySetupType setup_type);
+void RAMOverrideForIOSMemoryValues(Memory::MemoryManager& memory, MemorySetupType setup_type);
 
 void WriteReturnValue(s32 value, u32 address);