diff --git a/MIGRATING.md b/MIGRATING.md
index 6891720b5..fd2b259ea 100644
--- a/MIGRATING.md
+++ b/MIGRATING.md
@@ -9,7 +9,7 @@
 
 - `as` prop was removed from Themed.X components from `@theme-ui/mdx`.
 
-  - All occurences of `<Themed.X as="element">` can be changed to
+  - All occurrences of `<Themed.X as="element">` can be changed to
     `<element sx={t => t.styles.X} />`.
 
 ## v0.13