diff --git a/README.md b/README.md
index f01286d3..64a24b61 100644
--- a/README.md
+++ b/README.md
@@ -85,15 +85,18 @@ fn main() {
     let path = Path::new(&env::var("OUT_DIR").unwrap()).join("codegen.rs");
     let mut file = BufWriter::new(File::create(&path).unwrap());
 
-    write!(&mut file, "static KEYWORDS: phf::Map<&'static str, Keyword> = ").unwrap();
-    phf_codegen::Map::new()
-        .entry("loop", "Keyword::Loop")
-        .entry("continue", "Keyword::Continue")
-        .entry("break", "Keyword::Break")
-        .entry("fn", "Keyword::Fn")
-        .entry("extern", "Keyword::Extern")
-        .build(&mut file)
-        .unwrap();
+    write!(
+        &mut file,
+        "static KEYWORDS: phf::Map<&'static str, Keyword> = {}",
+        phf_codegen::Map::new()
+            .entry("loop", "Keyword::Loop")
+            .entry("continue", "Keyword::Continue")
+            .entry("break", "Keyword::Break")
+            .entry("fn", "Keyword::Fn")
+            .entry("extern", "Keyword::Extern")
+            .build()
+    )
+    .unwrap();
     write!(&mut file, ";\n").unwrap();
 }
 ```