diff --git a/src/ch19-01-unsafe-rust.md b/src/ch19-01-unsafe-rust.md
index 6ff229dd37..a8133ca8e5 100644
--- a/src/ch19-01-unsafe-rust.md
+++ b/src/ch19-01-unsafe-rust.md
@@ -34,7 +34,7 @@ include the ability to:
 * Call an unsafe function or method
 * Access or modify a mutable static variable
 * Implement an unsafe trait
-* Access fields of `union`s
+* Access fields of a `union`
 
 It’s important to understand that `unsafe` doesn’t turn off the borrow checker
 or disable any other of Rust’s safety checks: if you use a reference in unsafe