diff --git a/korman/exporter/etlight.py b/korman/exporter/etlight.py
index 127e6f1..1e3b621 100644
--- a/korman/exporter/etlight.py
+++ b/korman/exporter/etlight.py
@@ -163,9 +163,7 @@ class LightBaker:
 
             mods = i.plasma_modifiers
             if mods.lightmap.enabled:
-                ## TODO: customizable render layers
-                #key = ("lightmap",) + mods.lightmap.render_layers
-                key = ("lightmap",) + ((True,) * 20)
+                key = ("lightmap",) + tuple(mods.lightmap.render_layers)
                 if key in bake:
                     bake[key].append(i)
                 else:
diff --git a/korman/properties/modifiers/render.py b/korman/properties/modifiers/render.py
index 05b1ae8..af59b33 100644
--- a/korman/properties/modifiers/render.py
+++ b/korman/properties/modifiers/render.py
@@ -19,6 +19,7 @@ from bpy.props import *
 from PyHSPlasma import *
 
 from .base import PlasmaModifierProperties
+from ...exporter.etlight import _NUM_RENDER_LAYERS
 from ...exporter import utils
 from ...exporter.explosions import ExportError
 
@@ -93,6 +94,13 @@ class PlasmaLightMapGen(PlasmaModifierProperties):
                                   ("1024", "1024px", "1024x1024 pixels"),
                             ])
 
+    render_layers = BoolVectorProperty(name="Layers",
+                                       description="Render layers to use for baking",
+                                       options=set(),
+                                       subtype="LAYER",
+                                       size=_NUM_RENDER_LAYERS,
+                                       default=((True,) * _NUM_RENDER_LAYERS))
+
     light_group = StringProperty(name="Light Group",
                                  description="Group that defines the collection of lights to bake")
 
diff --git a/korman/ui/modifiers/render.py b/korman/ui/modifiers/render.py
index 2449280..04291d9 100644
--- a/korman/ui/modifiers/render.py
+++ b/korman/ui/modifiers/render.py
@@ -23,6 +23,7 @@ def followmod(modifier, layout, context):
 
 def lightmap(modifier, layout, context):
     layout.row(align=True).prop(modifier, "quality", expand=True)
+    layout.prop(modifier, "render_layers", text="Active Render Layers")
     layout.prop_search(modifier, "light_group", bpy.data, "groups", icon="GROUP")
     layout.prop_search(modifier, "uv_map", context.active_object.data, "uv_textures")