diff --git a/build.rs b/build.rs
index af49e54..17a5742 100644
--- a/build.rs
+++ b/build.rs
@@ -782,7 +782,11 @@ fn emit_token(
 ) {
     if !tok.is_link {
         // Literal text - escape for Rust string
-        let escaped = tok.text.replace('\\', "\\\\").replace('"', "\\\"");
+        let escaped = tok
+            .text
+            .replace('\\', "\\\\")
+            .replace('"', "\\\"")
+            .to_lowercase();
         if !escaped.is_empty() {
             writeln!(out, "                write!(__f,\"{escaped}\")?;").unwrap();
         }