diff --git a/docs/grammar/README.md b/docs/grammar/README.md
index 97b9dd8e56..e8e3b233a2 100644
--- a/docs/grammar/README.md
+++ b/docs/grammar/README.md
@@ -821,9 +821,13 @@ file = *declaration
 Format String Grammar
 ---------------------
 
+The code points mentioned in this grammar represent
+the elements of a Leo format string already parsed,
+after escapes have been processed.
+
 <a name="not-brace"></a>
 ```abnf
-not-brace = %x0-7A / %x7C / %x7E-D7FF / %xE000-10FFFF ; anything but { or }
+not-brace = %x0-7A / %x7C / %x7E-10FFFF ; anything but { or }
 ```
 
 <a name="format-string-container"></a>
diff --git a/docs/grammar/abnf-grammar.txt b/docs/grammar/abnf-grammar.txt
index aafe2a6c90..c67ec53237 100644
--- a/docs/grammar/abnf-grammar.txt
+++ b/docs/grammar/abnf-grammar.txt
@@ -329,7 +329,11 @@ file = *declaration
 ; Format String Grammar
 ; ---------------------
 
-not-brace = %x0-7A / %x7C / %x7E-D7FF / %xE000-10FFFF ; anything but { or }
+; The code points mentioned in this grammar represent
+; the elements of a Leo format string already parsed,
+; after escapes have been processed.
+
+not-brace = %x0-7A / %x7C / %x7E-10FFFF ; anything but { or }
 
 format-string-container = "{}"