diff --git a/release/scripts/startup/bl_operators/vertexpaint_dirt.py b/release/scripts/startup/bl_operators/vertexpaint_dirt.py
index a249599b5d7..7024582ad30 100644
--- a/release/scripts/startup/bl_operators/vertexpaint_dirt.py
+++ b/release/scripts/startup/bl_operators/vertexpaint_dirt.py
@@ -145,6 +145,7 @@ from math import pi
 
 
 class VertexPaintDirt(Operator):
+    '''Generate a dirt map gradient based on cavity'''
     bl_idname = "paint.vertex_color_dirt"
     bl_label = "Dirty Vertex Colors"
     bl_options = {'REGISTER', 'UNDO'}