diff --git a/layers.qmd b/layers.qmd
index 10840db4..f438c635 100644
--- a/layers.qmd
+++ b/layers.qmd
@@ -258,7 +258,7 @@ It may take some time before the best approach is immediately obvious, so if you
 
 Instead of mapping an aesthetic property to a variable, you can set it to a *single* value by specifying it in the layer parameters.
 We **map** an aesthetic to a variable (e.g., `aes(colour = cut)`) or **set** it to a constant (e.g., `colour = "red"`).
-If you want appearance to be governed by a variable, put the specification inside `aes()`; if you want override the default size or colour, put the value outside of `aes()`.
+If you want appearance to be governed by a variable, put the specification inside `aes()`; if you want to override the default size or colour, put the value outside of `aes()`.
 \index{Aesthetics!setting}
 
 The following plots are created with similar code, but have rather different outputs.