diff --git a/code/nel/tools/logic/logic_editor_dll/logic_editor_interface.h b/code/nel/tools/logic/logic_editor_dll/logic_editor_interface.h
index f2ac7c13a..d0059571c 100644
--- a/code/nel/tools/logic/logic_editor_dll/logic_editor_interface.h
+++ b/code/nel/tools/logic/logic_editor_dll/logic_editor_interface.h
@@ -17,6 +17,8 @@
 #ifndef LOGIC_EDITOR_INTERFACE
 #define LOGIC_EDITOR_INTERFACE
 
+#include <tchar.h>
+
 #ifndef LOGIC_EDITOR_EXPORT
 #define LOGIC_EDITOR_EXPORT __declspec( dllimport ) 
 #endif // LOGIC_EDITOR_EXPORT