diff --git a/preserves-schema.md b/preserves-schema.md
index fdc86a4..8c41258 100644
--- a/preserves-schema.md
+++ b/preserves-schema.md
@@ -411,7 +411,7 @@ Compound patterns involve optionally-named subpatterns:
     DictionaryEntries = { any: NamedSimplePattern ...:... }.
 
 Explicitly-named subpatterns are always `SimplePattern`s; but,
-depending context, if a name is omitted, the pattern may be a
+depending on context, if a name is omitted, the pattern may be a
 `Pattern` or may be restricted to `SimplePattern` as well:
 
     NamedSimplePattern = @named NamedSimplePattern_ / @anonymous SimplePattern .