diff --git a/addons/io_scene_swbf_msh/msh_material_utilities.py b/addons/io_scene_swbf_msh/msh_material_utilities.py
index 1765032..7a81f63 100644
--- a/addons/io_scene_swbf_msh/msh_material_utilities.py
+++ b/addons/io_scene_swbf_msh/msh_material_utilities.py
@@ -18,19 +18,7 @@ _RENDERTYPES_MAPPING = {
     "NORMALMAPPED_TILED_ENVMAPPED_BF2": Rendertype.NORMALMAPPED_TILED_ENVMAP}
 
 
-_REVERSE_RENDERTYPES_MAPPING = {
-    Rendertype.NORMAL : "NORMAL_BF2",
-    Rendertype.SCROLLING : "SCROLLING_BF2",
-    Rendertype.ENVMAPPED : "ENVMAPPED_BF2",
-    Rendertype.ANIMATED : "ANIMATED_BF2",
-    Rendertype.REFRACTION : "REFRACTION_BF2",
-    Rendertype.BLINK : "BLINK_BF2",
-    Rendertype.NORMALMAPPED_TILED : "NORMALMAPPED_TILED_BF2",
-    Rendertype.NORMALMAPPED_ENVMAPPED : "NORMALMAPPED_ENVMAPPED_BF2",
-    Rendertype.NORMALMAPPED : "NORMALMAPPED_BF2",
-    Rendertype.NORMALMAPPED_TILED_ENVMAP : "NORMALMAPPED_TILED_ENVMAPPED_BF2"}
-
-
+_REVERSE_RENDERTYPES_MAPPING = {val: key for (key, val) in _RENDERTYPES_MAPPING.items()}
 
 
 def remove_unused_materials(materials: Dict[str, Material],