diff --git a/Source/Core/Core/HW/DSPHLE/DSPHLE.cpp b/Source/Core/Core/HW/DSPHLE/DSPHLE.cpp
index 22f6f70e86..e29fbddb71 100644
--- a/Source/Core/Core/HW/DSPHLE/DSPHLE.cpp
+++ b/Source/Core/Core/HW/DSPHLE/DSPHLE.cpp
@@ -14,7 +14,7 @@
 
 namespace DSP::HLE
 {
-DSPHLE::DSPHLE(Core::System& system) : m_system(system)
+DSPHLE::DSPHLE(Core::System& system) : m_mail_handler(system.GetDSP()), m_system(system)
 {
 }
 
diff --git a/Source/Core/Core/HW/DSPHLE/MailHandler.cpp b/Source/Core/Core/HW/DSPHLE/MailHandler.cpp
index 33b044f69f..db783a51e7 100644
--- a/Source/Core/Core/HW/DSPHLE/MailHandler.cpp
+++ b/Source/Core/Core/HW/DSPHLE/MailHandler.cpp
@@ -8,11 +8,10 @@
 #include "Common/Logging/Log.h"
 #include "Common/MsgHandler.h"
 #include "Core/HW/DSP.h"
-#include "Core/System.h"
 
 namespace DSP::HLE
 {
-CMailHandler::CMailHandler()
+CMailHandler::CMailHandler(DSP::DSPManager& dsp) : m_dsp(dsp)
 {
 }
 
@@ -26,8 +25,7 @@ void CMailHandler::PushMail(u32 mail, bool interrupt, int cycles_into_future)
   {
     if (m_pending_mails.empty())
     {
-      Core::System::GetInstance().GetDSP().GenerateDSPInterruptFromDSPEmu(DSP::INT_DSP,
-                                                                          cycles_into_future);
+      m_dsp.GenerateDSPInterruptFromDSPEmu(DSP::INT_DSP, cycles_into_future);
     }
     else
     {
@@ -60,7 +58,7 @@ u16 CMailHandler::ReadDSPMailboxLow()
 
     if (generate_interrupt)
     {
-      Core::System::GetInstance().GetDSP().GenerateDSPInterruptFromDSPEmu(DSP::INT_DSP);
+      m_dsp.GenerateDSPInterruptFromDSPEmu(DSP::INT_DSP);
     }
   }
   // Clear the top bit of the high mail word after the mail has been read.
diff --git a/Source/Core/Core/HW/DSPHLE/MailHandler.h b/Source/Core/Core/HW/DSPHLE/MailHandler.h
index ee38bcde53..5ce9a7af0d 100644
--- a/Source/Core/Core/HW/DSPHLE/MailHandler.h
+++ b/Source/Core/Core/HW/DSPHLE/MailHandler.h
@@ -8,6 +8,10 @@
 
 #include "Common/CommonTypes.h"
 
+namespace DSP
+{
+class DSPManager;
+}
 class PointerWrap;
 
 namespace DSP::HLE
@@ -15,7 +19,11 @@ namespace DSP::HLE
 class CMailHandler
 {
 public:
-  CMailHandler();
+  explicit CMailHandler(DSP::DSPManager& dsp);
+  CMailHandler(const CMailHandler& other) = delete;
+  CMailHandler(CMailHandler&& other) = delete;
+  CMailHandler& operator=(const CMailHandler& other) = delete;
+  CMailHandler& operator=(CMailHandler&& other) = delete;
   ~CMailHandler();
 
   // TODO: figure out correct timing for interrupts rather than defaulting to "immediately."
@@ -44,5 +52,7 @@ private:
   u32 m_last_mail = 0;
   // When halted, the DSP itself is not running, but the last mail can be read.
   bool m_halted = false;
+
+  DSP::DSPManager& m_dsp;
 };
 }  // namespace DSP::HLE