diff --git a/Source/Core/Core/IOS/USB/USB_KBD.h b/Source/Core/Core/IOS/USB/USB_KBD.h
index bd53e0ae0e..d0039d4ba7 100644
--- a/Source/Core/Core/IOS/USB/USB_KBD.h
+++ b/Source/Core/Core/IOS/USB/USB_KBD.h
@@ -7,6 +7,7 @@
 #include <array>
 #include <queue>
 #include <string>
+#include <type_traits>
 
 #include "Common/CommonTypes.h"
 #include "Core/IOS/Device.h"
@@ -45,6 +46,8 @@ private:
 
     MessageData(u32 msg_type, u8 modifiers, PressedKeyData pressed_keys);
   };
+  static_assert(std::is_trivially_copyable_v<MessageData>,
+                "MessageData must be trivially copyable, as it's copied into emulated memory.");
 #pragma pack(pop)
   std::queue<MessageData> m_MessageQueue;