diff --git a/bindings/rust/lib.rs b/bindings/rust/lib.rs
index 4add90e..c49b7bb 100644
--- a/bindings/rust/lib.rs
+++ b/bindings/rust/lib.rs
@@ -24,7 +24,9 @@
 //! ```
 //! let code = "";
 //! let mut parser = tree_sitter::Parser::new();
-//! parser.set_language(tree_sitter_erlang::language()).expect("Error loading erlang grammar");
+//! parser
+//!     .set_language(tree_sitter_erlang::language())
+//!     .expect("Error loading erlang grammar");
 //! let tree = parser.parse(code, None).unwrap();
 //! ```
 //!