diff --git a/crates/ra_syntax/src/parsing/lexer.rs b/crates/ra_syntax/src/parsing/lexer.rs
index f75e321c3e..45ef88ac08 100644
--- a/crates/ra_syntax/src/parsing/lexer.rs
+++ b/crates/ra_syntax/src/parsing/lexer.rs
@@ -150,6 +150,7 @@ pub fn classify_literal(text: &str) -> Option<Token> {
 mod tests {
     use super::*;
 
+    // https://github.com/rust-analyzer/rust-analyzer/issues/1592
     #[test]
     fn lex_float_literal() {
         assert_eq!(
@@ -157,4 +158,4 @@ mod tests {
             Token { kind: FLOAT_NUMBER, len: TextUnit::from_usize(5)}
         );
     }
-}
\ No newline at end of file
+}