diff --git a/korman/operators/op_toolbox.py b/korman/operators/op_toolbox.py
index 52fd8612..827b6adc 100644
--- a/korman/operators/op_toolbox.py
+++ b/korman/operators/op_toolbox.py
@@ -174,7 +174,7 @@ def execute(self, context):
 
         
 class PlasmaToggleDoubleSidedOperator(ToolboxOperator, bpy.types.Operator):
-    bl_idname = "mat.plasma_toggle_double_sided"
+    bl_idname = "material.plasma_toggle_double_sided"
     bl_label = "Toggle All Double Sided"
     bl_description = "Toggles all materials to be double sided"
     
@@ -188,7 +188,7 @@ def execute(self, context):
 
 
 class PlasmaToggleDoubleSidedSelectOperator(ToolboxOperator, bpy.types.Operator):
-    bl_idname = "mat.plasma_toggle_double_sided_selected"
+    bl_idname = "material.plasma_toggle_double_sided_selected"
     bl_label = "Toggle Selected Double Sided"
     bl_description = "Toggles selected meshes' material(s) double sided value"
     
@@ -197,7 +197,7 @@ def poll(cls, context):
         return super().poll(context) and hasattr(bpy.context, "selected_objects")
 
     def execute(self, context):
-        mat_list = [i.data for i in context.selected_objects if i.type == "MATERIAL"]
+        mat_list = [slot.material for slot in itertools.chain.from_iterable((i.material_slots for i in context.selected_objects)) if slot and slot.material]
         enable = not all((mat.plasma_mat.plasma_double_sided for mat in mat_list))
         for mat in mat_list:
             mat.plasma_mat.plasma_double_sided = enable
diff --git a/korman/properties/prop_material.py b/korman/properties/prop_material.py
index e1ea28dd..4c5b8002 100644
--- a/korman/properties/prop_material.py
+++ b/korman/properties/prop_material.py
@@ -19,7 +19,7 @@
 from .. import idprops
 
 class PlasmaMaterial(bpy.types.PropertyGroup):
-    bl_idname = "mat.plasma_mat"
+    bl_idname = "material.plasma_material"
 	
     plasma_double_sided = BoolProperty(name="Double Sided",
                                        description="Sets this material as double sided (formerly TWOSIDE)",
diff --git a/korman/ui/ui_material.py b/korman/ui/ui_material.py
index db460d2b..496a6674 100644
--- a/korman/ui/ui_material.py
+++ b/korman/ui/ui_material.py
@@ -31,8 +31,8 @@ class PlasmaMaterialPanel(MaterialButtonsPanel, bpy.types.Panel):
     bl_label = "Plasma Material Options"
 	
     def draw(self, context):
-        mat, slot = context.material, getattr(context, "material_slot", None)
-        mat_props = mat.plasma_mat
+        mat = context.material
+        mat_props = mat.plasma_material
         layout = self.layout
 
         split = layout.split()