diff --git a/src/parse.rs b/src/parse.rs
index a2213c8..a9c7056 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -30,7 +30,7 @@ pub struct Language {
 impl Language {
     /// The default Rust language config.
     pub const RUST: Self = Self {
-        comment: Cow::Borrowed("// "),
+        comment: Cow::Borrowed("//"),
     };
 
     /// Extracts a header (as a list of lines) from an input in this language.