diff --git a/release/ui/buttons_material.py b/release/ui/buttons_material.py
index 8c977567324..c04fbd7e1da 100644
--- a/release/ui/buttons_material.py
+++ b/release/ui/buttons_material.py
@@ -1,6 +1,12 @@
 	
 import bpy
 
+# If python version is less than 2.4, try to get set stuff from module
+try:
+	set
+except:
+	from sets import Set as set
+
 class MaterialButtonsPanel(bpy.types.Panel):
 	__space_type__ = "BUTTONS_WINDOW"
 	__region_type__ = "WINDOW"
diff --git a/release/ui/buttons_scene.py b/release/ui/buttons_scene.py
index d34307d0291..f9ca02d2b4b 100644
--- a/release/ui/buttons_scene.py
+++ b/release/ui/buttons_scene.py
@@ -1,6 +1,12 @@
 
 import bpy
 
+# If python version is less than 2.4, try to get set stuff from module
+try:
+	set
+except:
+	from sets import Set as set
+
 class RenderButtonsPanel(bpy.types.Panel):
 	__space_type__ = "BUTTONS_WINDOW"
 	__region_type__ = "WINDOW"
diff --git a/release/ui/buttons_world.py b/release/ui/buttons_world.py
index 62c720d09d1..e44d7102511 100644
--- a/release/ui/buttons_world.py
+++ b/release/ui/buttons_world.py
@@ -1,6 +1,12 @@
 
 import bpy
 
+# If python version is less than 2.4, try to get set stuff from module
+try:
+	set
+except:
+	from sets import Set as set
+
 class WorldButtonsPanel(bpy.types.Panel):
 	__space_type__ = "BUTTONS_WINDOW"
 	__region_type__ = "WINDOW"