diff --git a/docs/the_black_code_style/current_style.md b/docs/the_black_code_style/current_style.md
index 59d79c4cd0e..078e6dbbdec 100644
--- a/docs/the_black_code_style/current_style.md
+++ b/docs/the_black_code_style/current_style.md
@@ -457,7 +457,7 @@ the latter are treated as true raw strings with no special semantics.
 
 ### AST before and after formatting
 
-When run with `--safe`, _Black_ checks that the code before and after is semantically
+When run with `--safe` (the default), _Black_ checks that the code before and after is semantically
 equivalent. This check is done by comparing the AST of the source with the AST of the
 target. There are three limited cases in which the AST does differ: