diff --git a/rottlsp/src/main.rs b/rottlsp/src/main.rs
index d88dfc1..e82bab5 100644
--- a/rottlsp/src/main.rs
+++ b/rottlsp/src/main.rs
@@ -37,7 +37,7 @@ impl tower_lsp::LanguageServer for RottLanguageServer {
         // Measure lexing performance to track parser responsiveness.
         let start_time = std::time::Instant::now();
         let has_errors =
-            rottlib::lexer::TokenizedFile::from_source(&params.text_document.text).had_errors();
+            rottlib::lexer::TokenizedFile::from_str(&params.text_document.text).has_errors();
         let elapsed_time = start_time.elapsed();
 
         self.client