diff --git a/tests/graphical.rs b/tests/graphical.rs
index c6b5e1a..2b29f15 100644
--- a/tests/graphical.rs
+++ b/tests/graphical.rs
@@ -2000,10 +2000,10 @@ fn syntax_highlighter_on_real_file() {
     // SourceSpan constants for column and length
     const CO: usize = 28;
     const LEN: usize = 27;
-    let file_src = std::fs::read_to_string(&filename).unwrap();
+    let file_src = std::fs::read_to_string(filename).unwrap();
     let offset = miette::SourceOffset::from_location(&file_src, line, CO);
     let err = Test {
-        src: NamedSource::new(&filename, file_src.clone()),
+        src: NamedSource::new(filename, file_src.clone()),
         src_span: SourceSpan::new(offset, LEN.into()),
     };