diff --git a/ISLE/define.h b/ISLE/define.h
index 7adc751e..27a347b7 100644
--- a/ISLE/define.h
+++ b/ISLE/define.h
@@ -1,7 +1,7 @@
 #ifndef DEFINE_H
 #define DEFINE_H
 
-#include <Windows.h>
+#include "legoinc.h"
 
 class Isle;
 
diff --git a/ISLE/isle.h b/ISLE/isle.h
index b11f4c09..8eb37fa7 100644
--- a/ISLE/isle.h
+++ b/ISLE/isle.h
@@ -1,8 +1,7 @@
 #ifndef ISLE_H
 #define ISLE_H
 
-#include <windows.h>
-
+#include "legoinc.h"
 #include "define.h"
 
 #include "legoomni.h"
diff --git a/ISLE/main.cpp b/ISLE/main.cpp
index 6e4c6621..632ed43d 100644
--- a/ISLE/main.cpp
+++ b/ISLE/main.cpp
@@ -1,9 +1,10 @@
 #include <dsound.h>
-#include <windows.h>
 
+#include "legoinc.h"
 #include "define.h"
-#include "isle.h"
+
 #include "legoomni.h"
+#include "isle.h"
 
 // OFFSET: ISLE 0x401ca0
 BOOL FindExistingInstance(void)