diff --git a/src/base/log.cpp b/src/base/log.cpp
index 0816cdff..a5b9e8ad 100644
--- a/src/base/log.cpp
+++ b/src/base/log.cpp
@@ -17,6 +17,7 @@
 #if defined(_WIN32)
 #   define WIN32_LEAN_AND_MEAN
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #endif
 
 #if defined(__ANDROID__)
diff --git a/src/base/string.cpp b/src/base/string.cpp
index 1ff24664..3a7e1fca 100644
--- a/src/base/string.cpp
+++ b/src/base/string.cpp
@@ -17,6 +17,7 @@
 #if defined(_WIN32)
 #   define WIN32_LEAN_AND_MEAN
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #endif
 
 #include <cstdarg>
diff --git a/src/gpu/renderer.cpp b/src/gpu/renderer.cpp
index d252d4bd..224fee30 100644
--- a/src/gpu/renderer.cpp
+++ b/src/gpu/renderer.cpp
@@ -18,8 +18,9 @@
 #   if defined USE_D3D9
 #      include <d3d9.h>
 #   endif
-#   define WIN32_LEAN_AND_MEAN
+#   define WIN32_LEAN_AND_MEAN 1
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #   undef near /* Fuck Microsoft */
 #   undef far /* Fuck Microsoft again */
 #endif
diff --git a/src/gpu/shader.cpp b/src/gpu/shader.cpp
index 78cf137d..8b01d330 100644
--- a/src/gpu/shader.cpp
+++ b/src/gpu/shader.cpp
@@ -16,8 +16,9 @@
 #include <cstdio>
 
 #if defined _WIN32
-#   define WIN32_LEAN_AND_MEAN
+#   define WIN32_LEAN_AND_MEAN 1
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #   if defined USE_D3D9
 #       include <algorithm>
         using std::min;
diff --git a/src/lol/base/assert.h b/src/lol/base/assert.h
index 330923f3..400915d3 100644
--- a/src/lol/base/assert.h
+++ b/src/lol/base/assert.h
@@ -16,6 +16,14 @@
 
 #include <cstdlib>
 
+#if defined _WIN32
+#   define WIN32_LEAN_AND_MEAN 1
+#   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
+#   undef near /* Fuck Microsoft */
+#   undef far /* Fuck Microsoft again */
+#endif
+
 namespace lol
 {
 
diff --git a/src/scene.cpp b/src/scene.cpp
index 6a58ec8b..c9d5618a 100644
--- a/src/scene.cpp
+++ b/src/scene.cpp
@@ -18,6 +18,7 @@
 #if defined(_WIN32)
 #   define WIN32_LEAN_AND_MEAN 1
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #endif
 
 #include "lolgl.h"
diff --git a/src/sys/file.cpp b/src/sys/file.cpp
index 80f01860..1c97425f 100644
--- a/src/sys/file.cpp
+++ b/src/sys/file.cpp
@@ -18,6 +18,7 @@
 #if defined(_WIN32)
 #   define WIN32_LEAN_AND_MEAN 1
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #else
 #   include <dirent.h>
 #endif
diff --git a/src/sys/init.cpp b/src/sys/init.cpp
index 90c2d299..8cb0d8c3 100644
--- a/src/sys/init.cpp
+++ b/src/sys/init.cpp
@@ -21,6 +21,7 @@
 #if _WIN32
 #   define WIN32_LEAN_AND_MEAN
 #   include <direct.h>
+#   undef WIN32_LEAN_AND_MEAN
 #endif
 
 namespace lol
diff --git a/src/sys/timer.cpp b/src/sys/timer.cpp
index 7ed0a902..e9a01ed0 100644
--- a/src/sys/timer.cpp
+++ b/src/sys/timer.cpp
@@ -20,6 +20,7 @@
 #elif _WIN32
 #   define WIN32_LEAN_AND_MEAN
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #elif HAVE_SDL_SDL_H
 #   include <SDL/SDL.h>
 #else
diff --git a/src/textureimage.cpp b/src/textureimage.cpp
index 045543c9..19a5f627 100644
--- a/src/textureimage.cpp
+++ b/src/textureimage.cpp
@@ -17,6 +17,7 @@
 #if defined _WIN32
 #   define WIN32_LEAN_AND_MEAN
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #   if defined USE_D3D9
 #       define FAR
 #       define NEAR
diff --git a/src/tileset.cpp b/src/tileset.cpp
index 4735651e..86df6668 100644
--- a/src/tileset.cpp
+++ b/src/tileset.cpp
@@ -19,6 +19,7 @@
 #if defined _WIN32
 #   define WIN32_LEAN_AND_MEAN
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #   if defined USE_D3D9
 #       define FAR
 #       define NEAR
diff --git a/src/video.cpp b/src/video.cpp
index 8d6fc34b..e9a30579 100644
--- a/src/video.cpp
+++ b/src/video.cpp
@@ -16,6 +16,7 @@
 #   endif
 #   define WIN32_LEAN_AND_MEAN
 #   include <windows.h>
+#   undef WIN32_LEAN_AND_MEAN
 #   undef near /* Fuck Microsoft */
 #   undef far /* Fuck Microsoft again */
 #endif