diff --git a/docs/src/integration/pc/windows.rst b/docs/src/integration/pc/windows.rst
index dfc1ab2a99..56095abfb8 100644
--- a/docs/src/integration/pc/windows.rst
+++ b/docs/src/integration/pc/windows.rst
@@ -121,7 +121,7 @@ Once enabled, the Windows driver can be used like this:
 
 .. code-block:: c
 
-    #include <Windows.h>
+    #include <windows.h>
     #include "lvgl/lvgl.h"
     #include "lvgl/examples/lv_examples.h"
     #include "lvgl/demos/lv_demos.h"
diff --git a/src/osal/lv_windows.h b/src/osal/lv_windows.h
index 9d864535db..de158ab122 100644
--- a/src/osal/lv_windows.h
+++ b/src/osal/lv_windows.h
@@ -16,7 +16,7 @@ extern "C" {
 
 #if LV_USE_OS == LV_OS_WINDOWS
 
-#include <Windows.h>
+#include <windows.h>
 #include <stdbool.h>
 
 /*********************