diff --git a/code/ryzom/client/src/interface_v3/lua_helper.cpp b/code/ryzom/client/src/interface_v3/lua_helper.cpp
index 80a275523..bd01d42f9 100644
--- a/code/ryzom/client/src/interface_v3/lua_helper.cpp
+++ b/code/ryzom/client/src/interface_v3/lua_helper.cpp
@@ -26,15 +26,20 @@
 #endif
 
 
-extern "C"
-{
-#include "lualib.h"
-}
+#include "lua_loadlib.h"
 
 // to get rid of you_must_not_use_assert___use_nl_assert___read_debug_h_file messages
 #include <cassert>
-#undef assert
-#define assert nlassert
+#ifdef assert
+	#undef assert
+#endif
+
+#ifdef NL_DEBUG
+	#define assert(x) nlassert(x)
+#else
+	#define assert(x)
+#endif
+
 #include <luabind/luabind.hpp>
 
 using namespace std;
diff --git a/code/ryzom/client/src/interface_v3/lua_ihm.cpp b/code/ryzom/client/src/interface_v3/lua_ihm.cpp
index 2b9752b52..b43c7f4ba 100644
--- a/code/ryzom/client/src/interface_v3/lua_ihm.cpp
+++ b/code/ryzom/client/src/interface_v3/lua_ihm.cpp
@@ -28,8 +28,16 @@
 
 // to get rid of you_must_not_use_assert___use_nl_assert___read_debug_h_file messages
 #include <cassert>
-#undef assert
-#define assert nlassert
+#ifdef assert
+	#undef assert
+#endif
+
+#ifdef NL_DEBUG
+	#define assert(x) nlassert(x)
+#else
+	#define assert(x)
+#endif
+
 #include <luabind/luabind.hpp>
 // in luabind > 0.6, LUABIND_MAX_ARITY is set to 10
 #if LUABIND_MAX_ARITY == 10
diff --git a/code/ryzom/client/src/interface_v3/lua_loadlib.h b/code/ryzom/client/src/interface_v3/lua_loadlib.h
index 32907d096..b68ed94fd 100644
--- a/code/ryzom/client/src/interface_v3/lua_loadlib.h
+++ b/code/ryzom/client/src/interface_v3/lua_loadlib.h
@@ -17,9 +17,12 @@
 #ifndef LUA_LOADLIB_H
 #define LUA_LOADLIB_H
 
-#include "lua.h"
-#include "lauxlib.h"
-#include "lualib.h"
+extern "C"
+{
+#include <lua.h>
+#include <lauxlib.h>
+#include <lualib.h>
+}
 
 // load the lua dll, return 1 on success
 //int loadLuaDLL();