diff --git a/Source/Core/Core/Boot/Boot_BS2Emu.cpp b/Source/Core/Core/Boot/Boot_BS2Emu.cpp
index fa60ba4ab4..e320d93e71 100644
--- a/Source/Core/Core/Boot/Boot_BS2Emu.cpp
+++ b/Source/Core/Core/Boot/Boot_BS2Emu.cpp
@@ -21,6 +21,7 @@
 #include "Core/HW/DVDInterface.h"
 #include "Core/HW/EXI/EXI_DeviceIPL.h"
 #include "Core/HW/Memmap.h"
+#include "Core/IOS/ES/ES.h"
 #include "Core/IOS/ES/Formats.h"
 #include "Core/IOS/IPC.h"
 #include "Core/PatchEngine.h"
@@ -406,7 +407,7 @@ bool CBoot::EmulatedBS2_Wii()
   DEBUG_LOG(BOOT, "Run iAppLoaderClose");
   RunFunction(iAppLoaderClose);
 
-  IOS::HLE::ES_DIVerify(tmd, DVDInterface::GetVolume().GetTicket());
+  IOS::HLE::Device::ES::DIVerify(tmd, DVDInterface::GetVolume().GetTicket());
 
   // return
   PC = PowerPC::ppcState.gpr[3];
diff --git a/Source/Core/Core/Boot/Boot_WiiWAD.cpp b/Source/Core/Core/Boot/Boot_WiiWAD.cpp
index 612ddc8fe8..eff9775006 100644
--- a/Source/Core/Core/Boot/Boot_WiiWAD.cpp
+++ b/Source/Core/Core/Boot/Boot_WiiWAD.cpp
@@ -11,6 +11,7 @@
 #include "Common/NandPaths.h"
 
 #include "Core/Boot/Boot.h"
+#include "Core/IOS/ES/ES.h"
 #include "Core/IOS/FS/FileIO.h"
 #include "Core/IOS/IPC.h"
 #include "Core/PatchEngine.h"
@@ -87,7 +88,7 @@ bool CBoot::Boot_WiiWAD(const std::string& _pFilename)
   if (!SetupWiiMemory(ContentLoader.GetTMD().GetIOSId()))
     return false;
 
-  IOS::HLE::SetDefaultContentFile(_pFilename);
+  IOS::HLE::Device::ES::LoadWAD(_pFilename);
   if (!IOS::HLE::BootstrapPPC(ContentLoader))
     return false;
 
diff --git a/Source/Core/Core/IOS/DI/DI.cpp b/Source/Core/Core/IOS/DI/DI.cpp
index 59c0de4b52..4dc743b81c 100644
--- a/Source/Core/Core/IOS/DI/DI.cpp
+++ b/Source/Core/Core/IOS/DI/DI.cpp
@@ -14,8 +14,8 @@
 #include "Core/HW/DVDInterface.h"
 #include "Core/HW/Memmap.h"
 #include "Core/IOS/DI/DI.h"
+#include "Core/IOS/ES/ES.h"
 #include "Core/IOS/ES/Formats.h"
-#include "Core/IOS/IPC.h"
 #include "DiscIO/Volume.h"
 
 namespace IOS
@@ -106,10 +106,10 @@ IPCCommandResult DI::IOCtlV(const IOCtlVRequest& request)
     INFO_LOG(IOS_DI, "DVDLowOpenPartition: partition_offset 0x%016" PRIx64, partition_offset);
 
     // Read TMD to the buffer
-    const ES::TMDReader tmd = DVDInterface::GetVolume().GetTMD();
+    const IOS::ES::TMDReader tmd = DVDInterface::GetVolume().GetTMD();
     const std::vector<u8> raw_tmd = tmd.GetRawTMD();
     Memory::CopyToEmu(request.io_vectors[0].address, raw_tmd.data(), raw_tmd.size());
-    ES_DIVerify(tmd, DVDInterface::GetVolume().GetTicket());
+    ES::DIVerify(tmd, DVDInterface::GetVolume().GetTicket());
 
     return_value = 1;
     break;
diff --git a/Source/Core/Core/IOS/ES/ES.cpp b/Source/Core/Core/IOS/ES/ES.cpp
index 9cf977f439..e2cb1ce188 100644
--- a/Source/Core/Core/IOS/ES/ES.cpp
+++ b/Source/Core/Core/IOS/ES/ES.cpp
@@ -1491,6 +1491,8 @@ const DiscIO::CNANDContentLoader& ES::AccessContentDevice(u64 title_id)
   return DiscIO::CNANDContentManager::Access().GetNANDLoader(title_id, Common::FROM_SESSION_ROOT);
 }
 
+// This is technically an ioctlv in IOS's ES, but it is an internal API which cannot be
+// used from the PowerPC (for unpatched IOSes anyway).
 s32 ES::DIVerify(const IOS::ES::TMDReader& tmd, const IOS::ES::TicketReader& ticket)
 {
   s_title_context.Clear();
diff --git a/Source/Core/Core/IOS/IPC.cpp b/Source/Core/Core/IOS/IPC.cpp
index 8dff5a90a6..e8bb80f1aa 100644
--- a/Source/Core/Core/IOS/IPC.cpp
+++ b/Source/Core/Core/IOS/IPC.cpp
@@ -737,18 +737,6 @@ bool BootstrapPPC(const DiscIO::CNANDContentLoader& content_loader)
   return true;
 }
 
-void SetDefaultContentFile(const std::string& file_name)
-{
-  std::lock_guard<std::mutex> lock(s_device_map_mutex);
-  s_es_handles[0]->LoadWAD(file_name);
-}
-
-// XXX: also pass certificate chains?
-void ES_DIVerify(const ES::TMDReader& tmd, const ES::TicketReader& ticket)
-{
-  Device::ES::DIVerify(tmd, ticket);
-}
-
 void SDIO_EventNotify()
 {
   // TODO: Potential race condition: If IsRunning() becomes false after
diff --git a/Source/Core/Core/IOS/IPC.h b/Source/Core/Core/IOS/IPC.h
index 901699c545..9bf4f9a24a 100644
--- a/Source/Core/Core/IOS/IPC.h
+++ b/Source/Core/Core/IOS/IPC.h
@@ -21,12 +21,6 @@ class CNANDContentLoader;
 
 namespace IOS
 {
-namespace ES
-{
-class TMDReader;
-class TicketReader;
-}
-
 namespace HLE
 {
 namespace Device
@@ -72,10 +66,6 @@ bool BootstrapPPC(const DiscIO::CNANDContentLoader& content_loader);
 // Do State
 void DoState(PointerWrap& p);
 
-// Set default content file
-void SetDefaultContentFile(const std::string& file_name);
-void ES_DIVerify(const ES::TMDReader& tmd, const ES::TicketReader& ticket);
-
 void SDIO_EventNotify();
 
 std::shared_ptr<Device::Device> GetDeviceByName(const std::string& device_name);