diff --git a/changelogs/appendices/newsfragments/1652.clarification b/changelogs/appendices/newsfragments/1652.clarification
new file mode 100644
index 00000000..488b7e2b
--- /dev/null
+++ b/changelogs/appendices/newsfragments/1652.clarification
@@ -0,0 +1 @@
+Fix typo in canonical JSON grammar.
diff --git a/content/appendices.md b/content/appendices.md
index 59c1b1c3..a5ddb7bf 100644
--- a/content/appendices.md
+++ b/content/appendices.md
@@ -136,12 +136,12 @@ removing insignificant whitespace, fractions, exponents and redundant
 character escapes.
 
     value     = false / null / true / object / array / number / string
-    false     = %x66.61.6c.73.65
-    null      = %x6e.75.6c.6c
+    false     = %x66.61.6C.73.65
+    null      = %x6E.75.6C.6C
     true      = %x74.72.75.65
-    object    = %x7B [ member *( %x2C member ) ] %7D
+    object    = %x7B [ member *( %x2C member ) ] %x7D
     member    = string %x3A value
-    array     = %x5B [ value *( %x2C value ) ] %5B
+    array     = %x5B [ value *( %x2C value ) ] %x5D
     number    = [ %x2D ] int
     int       = %x30 / ( %x31-39 *digit )
     digit     = %x30-39