diff --git a/src/ftxui/component/screen_interactive.cpp b/src/ftxui/component/screen_interactive.cpp
index 899f518..32d7aab 100644
--- a/src/ftxui/component/screen_interactive.cpp
+++ b/src/ftxui/component/screen_interactive.cpp
@@ -33,7 +33,7 @@
 #ifndef NOMINMAX
 #define NOMINMAX
 #endif
-#include <Windows.h>
+#include <windows.h>
 #ifndef UNICODE
 #error Must be compiled in UNICODE mode
 #endif
diff --git a/src/ftxui/screen/screen.cpp b/src/ftxui/screen/screen.cpp
index ed73831..2f7b124 100644
--- a/src/ftxui/screen/screen.cpp
+++ b/src/ftxui/screen/screen.cpp
@@ -14,7 +14,7 @@
 #ifndef NOMINMAX
 #define NOMINMAX
 #endif
-#include <Windows.h>
+#include <windows.h>
 #endif
 
 namespace ftxui {
diff --git a/src/ftxui/screen/terminal.cpp b/src/ftxui/screen/terminal.cpp
index 4e1dd26..368212d 100644
--- a/src/ftxui/screen/terminal.cpp
+++ b/src/ftxui/screen/terminal.cpp
@@ -10,7 +10,7 @@
 #define NOMINMAX
 #endif
 
-#include <Windows.h>
+#include <windows.h>
 #else
 #include <sys/ioctl.h>  // for winsize, ioctl, TIOCGWINSZ
 #include <unistd.h>     // for STDOUT_FILENO