diff --git a/Documentation/GeneralConventions/CodingGuidelines.rst b/Documentation/GeneralConventions/CodingGuidelines.rst
index c3dcf2c1..18d4629c 100644
--- a/Documentation/GeneralConventions/CodingGuidelines.rst
+++ b/Documentation/GeneralConventions/CodingGuidelines.rst
@@ -105,7 +105,7 @@ Sample contents of :file:`.editorconfig`
    insert_final_newline = true
    trim_trailing_whitespace = true
    indent_style = space
-   indent_size = 3
+   indent_size = 4
    max_line_length = 80
 
    # MD-Files