diff --git a/Source/Core/Core/Core.vcxproj b/Source/Core/Core/Core.vcxproj
index 67101bfe4e..49a46413f9 100644
--- a/Source/Core/Core/Core.vcxproj
+++ b/Source/Core/Core/Core.vcxproj
@@ -340,7 +340,6 @@
     <ClInclude Include="ec_wii.h" />
     <ClInclude Include="FifoPlayer\FifoAnalyzer.h" />
     <ClInclude Include="FifoPlayer\FifoDataFile.h" />
-    <ClInclude Include="FifoPlayer\FifoFileStruct.h" />
     <ClInclude Include="FifoPlayer\FifoPlaybackAnalyzer.h" />
     <ClInclude Include="FifoPlayer\FifoPlayer.h" />
     <ClInclude Include="FifoPlayer\FifoRecordAnalyzer.h" />
diff --git a/Source/Core/Core/Core.vcxproj.filters b/Source/Core/Core/Core.vcxproj.filters
index 6d0b9c9a4a..57984fa078 100644
--- a/Source/Core/Core/Core.vcxproj.filters
+++ b/Source/Core/Core/Core.vcxproj.filters
@@ -961,9 +961,6 @@
     <ClInclude Include="FifoPlayer\FifoDataFile.h">
       <Filter>FifoPlayer</Filter>
     </ClInclude>
-    <ClInclude Include="FifoPlayer\FifoFileStruct.h">
-      <Filter>FifoPlayer</Filter>
-    </ClInclude>
     <ClInclude Include="FifoPlayer\FifoPlaybackAnalyzer.h">
       <Filter>FifoPlayer</Filter>
     </ClInclude>
diff --git a/Source/Core/Core/FifoPlayer/FifoDataFile.cpp b/Source/Core/Core/FifoPlayer/FifoDataFile.cpp
index 5a1fd476a3..3cb0d25493 100644
--- a/Source/Core/Core/FifoPlayer/FifoDataFile.cpp
+++ b/Source/Core/Core/FifoPlayer/FifoDataFile.cpp
@@ -9,9 +9,62 @@
 #include "Common/FileUtil.h"
 
 #include "Core/FifoPlayer/FifoDataFile.h"
-#include "Core/FifoPlayer/FifoFileStruct.h"
 
-using namespace FifoFileStruct;
+enum
+{
+  FILE_ID = 0x0d01f1f0,
+  VERSION_NUMBER = 4,
+  MIN_LOADER_VERSION = 1,
+};
+
+#pragma pack(push, 1)
+
+struct FileHeader
+{
+  u32 fileId;
+  u32 file_version;
+  u32 min_loader_version;
+  u64 bpMemOffset;
+  u32 bpMemSize;
+  u64 cpMemOffset;
+  u32 cpMemSize;
+  u64 xfMemOffset;
+  u32 xfMemSize;
+  u64 xfRegsOffset;
+  u32 xfRegsSize;
+  u64 frameListOffset;
+  u32 frameCount;
+  u32 flags;
+  u64 texMemOffset;
+  u32 texMemSize;
+  u8 reserved[40];
+};
+static_assert(sizeof(FileHeader) == 128, "FileHeader should be 128 bytes");
+
+struct FileFrameInfo
+{
+  u64 fifoDataOffset;
+  u32 fifoDataSize;
+  u32 fifoStart;
+  u32 fifoEnd;
+  u64 memoryUpdatesOffset;
+  u32 numMemoryUpdates;
+  u8 reserved[32];
+};
+static_assert(sizeof(FileFrameInfo) == 64, "FileFrameInfo should be 64 bytes");
+
+struct FileMemoryUpdate
+{
+  u32 fifoPosition;
+  u32 address;
+  u64 dataOffset;
+  u32 dataSize;
+  u8 type;
+  u8 reserved[3];
+};
+static_assert(sizeof(FileMemoryUpdate) == 24, "FileMemoryUpdate should be 24 bytes");
+
+#pragma pack(pop)
 
 FifoDataFile::FifoDataFile() = default;
 
diff --git a/Source/Core/Core/FifoPlayer/FifoFileStruct.h b/Source/Core/Core/FifoPlayer/FifoFileStruct.h
deleted file mode 100644
index bfe6bdb741..0000000000
--- a/Source/Core/Core/FifoPlayer/FifoFileStruct.h
+++ /dev/null
@@ -1,68 +0,0 @@
-// Copyright 2011 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include "Common/CommonTypes.h"
-
-namespace FifoFileStruct
-{
-enum
-{
-  FILE_ID = 0x0d01f1f0,
-  VERSION_NUMBER = 4,
-  MIN_LOADER_VERSION = 1,
-};
-
-#pragma pack(push, 4)
-
-union FileHeader
-{
-  struct
-  {
-    u32 fileId;
-    u32 file_version;
-    u32 min_loader_version;
-    u64 bpMemOffset;
-    u32 bpMemSize;
-    u64 cpMemOffset;
-    u32 cpMemSize;
-    u64 xfMemOffset;
-    u32 xfMemSize;
-    u64 xfRegsOffset;
-    u32 xfRegsSize;
-    u64 frameListOffset;
-    u32 frameCount;
-    u32 flags;
-    u64 texMemOffset;
-    u32 texMemSize;
-  };
-  u32 rawData[32];
-};
-
-union FileFrameInfo
-{
-  struct
-  {
-    u64 fifoDataOffset;
-    u32 fifoDataSize;
-    u32 fifoStart;
-    u32 fifoEnd;
-    u64 memoryUpdatesOffset;
-    u32 numMemoryUpdates;
-  };
-  u32 rawData[16];
-};
-
-struct FileMemoryUpdate
-{
-  u32 fifoPosition;
-  u32 address;
-  u64 dataOffset;
-  u32 dataSize;
-  u8 type;
-};
-
-#pragma pack(pop)
-}