diff --git a/modules/desktop_capture/win/d3d_device.h b/modules/desktop_capture/win/d3d_device.h
index b40279c..aeb9d18 100644
--- a/modules/desktop_capture/win/d3d_device.h
+++ b/modules/desktop_capture/win/d3d_device.h
@@ -11,9 +11,9 @@
 #ifndef MODULES_DESKTOP_CAPTURE_WIN_D3D_DEVICE_H_
 #define MODULES_DESKTOP_CAPTURE_WIN_D3D_DEVICE_H_
 
-#include <D3D11.h>
-#include <DXGI.h>
 #include <comdef.h>
+#include <d3d11.h>
+#include <dxgi.h>
 #include <wrl/client.h>
 
 #include <vector>
diff --git a/modules/desktop_capture/win/dxgi_adapter_duplicator.cc b/modules/desktop_capture/win/dxgi_adapter_duplicator.cc
index 81354fb..e3f11ac 100644
--- a/modules/desktop_capture/win/dxgi_adapter_duplicator.cc
+++ b/modules/desktop_capture/win/dxgi_adapter_duplicator.cc
@@ -10,8 +10,8 @@
 
 #include "modules/desktop_capture/win/dxgi_adapter_duplicator.h"
 
-#include <DXGI.h>
 #include <comdef.h>
+#include <dxgi.h>
 
 #include <algorithm>
 
diff --git a/modules/desktop_capture/win/dxgi_duplicator_controller.h b/modules/desktop_capture/win/dxgi_duplicator_controller.h
index cf0067d..a24e978 100644
--- a/modules/desktop_capture/win/dxgi_duplicator_controller.h
+++ b/modules/desktop_capture/win/dxgi_duplicator_controller.h
@@ -11,7 +11,7 @@
 #ifndef MODULES_DESKTOP_CAPTURE_WIN_DXGI_DUPLICATOR_CONTROLLER_H_
 #define MODULES_DESKTOP_CAPTURE_WIN_DXGI_DUPLICATOR_CONTROLLER_H_
 
-#include <D3DCommon.h>
+#include <d3dcommon.h>
 
 #include <atomic>
 #include <string>
diff --git a/modules/desktop_capture/win/dxgi_output_duplicator.cc b/modules/desktop_capture/win/dxgi_output_duplicator.cc
index a9ea02e..70172c2 100644
--- a/modules/desktop_capture/win/dxgi_output_duplicator.cc
+++ b/modules/desktop_capture/win/dxgi_output_duplicator.cc
@@ -12,10 +12,10 @@
 
 #include <string.h>
 
-#include <DXGI.h>
-#include <DXGIFormat.h>
-#include <Windows.h>
+#include <dxgi.h>
+#include <dxgiformat.h>
 #include <unknwn.h>
+#include <windows.h>
 
 #include <algorithm>
 
diff --git a/modules/desktop_capture/win/dxgi_output_duplicator.h b/modules/desktop_capture/win/dxgi_output_duplicator.h
index 9c05a70..5395146 100644
--- a/modules/desktop_capture/win/dxgi_output_duplicator.h
+++ b/modules/desktop_capture/win/dxgi_output_duplicator.h
@@ -11,9 +11,9 @@
 #ifndef MODULES_DESKTOP_CAPTURE_WIN_DXGI_OUTPUT_DUPLICATOR_H_
 #define MODULES_DESKTOP_CAPTURE_WIN_DXGI_OUTPUT_DUPLICATOR_H_
 
-#include <DXGI.h>
-#include <DXGI1_2.h>
 #include <comdef.h>
+#include <dxgi.h>
+#include <dxgi1_2.h>
 #include <wrl/client.h>
 
 #include <memory>
diff --git a/modules/desktop_capture/win/dxgi_texture.cc b/modules/desktop_capture/win/dxgi_texture.cc
index c8081fb..2919692 100644
--- a/modules/desktop_capture/win/dxgi_texture.cc
+++ b/modules/desktop_capture/win/dxgi_texture.cc
@@ -10,8 +10,8 @@
 
 #include "modules/desktop_capture/win/dxgi_texture.h"
 
-#include <D3D11.h>
 #include <comdef.h>
+#include <d3d11.h>
 #include <wrl/client.h>
 
 #include "modules/desktop_capture/desktop_region.h"
diff --git a/modules/desktop_capture/win/dxgi_texture.h b/modules/desktop_capture/win/dxgi_texture.h
index 18fa349..208e6a9 100644
--- a/modules/desktop_capture/win/dxgi_texture.h
+++ b/modules/desktop_capture/win/dxgi_texture.h
@@ -11,8 +11,8 @@
 #ifndef MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_H_
 #define MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_H_
 
-#include <D3D11.h>
-#include <DXGI1_2.h>
+#include <d3d11.h>
+#include <dxgi1_2.h>
 
 #include <memory>
 
diff --git a/modules/desktop_capture/win/dxgi_texture_mapping.cc b/modules/desktop_capture/win/dxgi_texture_mapping.cc
index 01bcaba..9e138d1 100644
--- a/modules/desktop_capture/win/dxgi_texture_mapping.cc
+++ b/modules/desktop_capture/win/dxgi_texture_mapping.cc
@@ -10,9 +10,9 @@
 
 #include "modules/desktop_capture/win/dxgi_texture_mapping.h"
 
-#include <DXGI.h>
-#include <DXGI1_2.h>
 #include <comdef.h>
+#include <dxgi.h>
+#include <dxgi1_2.h>
 
 #include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
diff --git a/modules/desktop_capture/win/dxgi_texture_mapping.h b/modules/desktop_capture/win/dxgi_texture_mapping.h
index 1d18a57..043ce61 100644
--- a/modules/desktop_capture/win/dxgi_texture_mapping.h
+++ b/modules/desktop_capture/win/dxgi_texture_mapping.h
@@ -11,8 +11,8 @@
 #ifndef MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_
 #define MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_
 
-#include <D3D11.h>
-#include <DXGI1_2.h>
+#include <d3d11.h>
+#include <dxgi1_2.h>
 
 #include "modules/desktop_capture/desktop_geometry.h"
 #include "modules/desktop_capture/desktop_region.h"
diff --git a/modules/desktop_capture/win/dxgi_texture_staging.cc b/modules/desktop_capture/win/dxgi_texture_staging.cc
index f2b3583..2bd1eb9 100644
--- a/modules/desktop_capture/win/dxgi_texture_staging.cc
+++ b/modules/desktop_capture/win/dxgi_texture_staging.cc
@@ -10,9 +10,9 @@
 
 #include "modules/desktop_capture/win/dxgi_texture_staging.h"
 
-#include <DXGI.h>
-#include <DXGI1_2.h>
 #include <comdef.h>
+#include <dxgi.h>
+#include <dxgi1_2.h>
 #include <unknwn.h>
 
 #include "rtc_base/checks.h"
diff --git a/modules/desktop_capture/win/dxgi_texture_staging.h b/modules/desktop_capture/win/dxgi_texture_staging.h
index 998b79f..e8c2af6 100644
--- a/modules/desktop_capture/win/dxgi_texture_staging.h
+++ b/modules/desktop_capture/win/dxgi_texture_staging.h
@@ -11,8 +11,8 @@
 #ifndef MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_STAGING_H_
 #define MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_STAGING_H_
 
-#include <D3D11.h>
-#include <DXGI1_2.h>
+#include <d3d11.h>
+#include <dxgi1_2.h>
 #include <wrl/client.h>
 
 #include "modules/desktop_capture/desktop_geometry.h"
diff --git a/modules/desktop_capture/win/screen_capturer_win_directx.h b/modules/desktop_capture/win/screen_capturer_win_directx.h
index 0e3b79c..ba417e7 100644
--- a/modules/desktop_capture/win/screen_capturer_win_directx.h
+++ b/modules/desktop_capture/win/screen_capturer_win_directx.h
@@ -11,7 +11,7 @@
 #ifndef MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURER_WIN_DIRECTX_H_
 #define MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURER_WIN_DIRECTX_H_
 
-#include <D3DCommon.h>
+#include <d3dcommon.h>
 
 #include <memory>
 #include <vector>