diff --git a/gfxlcd/driver/null/area_driver.py b/gfxlcd/driver/null/area_driver.py
index 3747718..a27be79 100644
--- a/gfxlcd/driver/null/area_driver.py
+++ b/gfxlcd/driver/null/area_driver.py
@@ -4,7 +4,7 @@ from gfxlcd.abstract.driver import Driver
 
 
 class AreaDriver(Driver):
-    """SPI communication driver"""
+    """Null communication driver"""
     def __init__(self, width, height):
         self.height = height
         self.width = width
diff --git a/gfxlcd/driver/null/null_area.py b/gfxlcd/driver/null/null_area.py
index 056a9c0..dfd1ca6 100644
--- a/gfxlcd/driver/null/null_area.py
+++ b/gfxlcd/driver/null/null_area.py
@@ -11,11 +11,11 @@ class NullArea(Area, Chip):
         self.rotation = 0
 
     def _converted_background_color(self):
-        """color from 8-8-8 to 5-6-5"""
+        """dummy background color"""
         return 2
 
     def _converted_color(self):
-        """color from 8-8-8 to 5-6-5"""
+        """dummy color"""
         return 1
 
     def init(self):