diff --git a/code/nel/tools/3d/cluster_viewer/view_cs.cpp b/code/nel/tools/3d/cluster_viewer/view_cs.cpp
index abe54ada5..5e31543ca 100644
--- a/code/nel/tools/3d/cluster_viewer/view_cs.cpp
+++ b/code/nel/tools/3d/cluster_viewer/view_cs.cpp
@@ -38,7 +38,9 @@
 #include "nel/3d/event_mouse_listener.h"
 
 #ifdef NL_OS_WINDOWS
-#	define NOMINMAX
+#	ifndef NL_COMP_MINGW
+#		define NOMINMAX
+#	endif
 #	include <windows.h>
 #endif // NL_OS_WINDOWS
 
diff --git a/code/nel/tools/3d/shapes_exporter/main.cpp b/code/nel/tools/3d/shapes_exporter/main.cpp
index 183bd8a49..56249e357 100644
--- a/code/nel/tools/3d/shapes_exporter/main.cpp
+++ b/code/nel/tools/3d/shapes_exporter/main.cpp
@@ -20,7 +20,9 @@
 #include "shapes_exporter.h"
 
 #ifdef NL_OS_WINDOWS
-#	define NOMINMAX
+#	ifndef NL_COMP_MINGW
+#		define NOMINMAX
+#	endif
 #	include <windows.h>
 #endif // NL_OS_WINDOWS
 
diff --git a/code/nel/tools/3d/zviewer/zviewer.cpp b/code/nel/tools/3d/zviewer/zviewer.cpp
index d1711c286..840b77cc7 100644
--- a/code/nel/tools/3d/zviewer/zviewer.cpp
+++ b/code/nel/tools/3d/zviewer/zviewer.cpp
@@ -41,8 +41,10 @@
 #include <nel/3d/height_map.h>
 
 #ifdef NL_OS_WINDOWS
-	#define NOMINMAX
-	#include <windows.h>
+#	ifndef NL_COMP_MINGW
+#		define NOMINMAX
+#	endif
+#	include <windows.h>
 #endif // NL_OS_WINDOWS
 
 using namespace std;