diff --git a/src/libproc_macro/lib.rs b/src/libproc_macro/lib.rs
index 13bce45243fe1..59ce14c97c0e6 100644
--- a/src/libproc_macro/lib.rs
+++ b/src/libproc_macro/lib.rs
@@ -69,7 +69,7 @@ pub struct LexError {
 #[stable(feature = "proc_macro_lexerror_impls", since = "1.44.0")]
 impl fmt::Display for LexError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.write_str("lex error")
+        f.write_str("cannot parse string into token stream")
     }
 }