diff --git a/src/theme.rs b/src/theme.rs
index 11352183..5cd571f1 100644
--- a/src/theme.rs
+++ b/src/theme.rs
@@ -509,7 +509,7 @@ mod tests {
                 ThemePreference::Light,
             ];
             for pref in prefs {
-                assert_eq!(pref, ThemePreference::new(&pref.to_string()));
+                assert_eq!(pref, ThemePreference::new(pref.to_string()));
             }
         }
     }
diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
index 436d84d5..3aafb17c 100644
--- a/tests/integration_tests.rs
+++ b/tests/integration_tests.rs
@@ -1832,7 +1832,7 @@ fn do_not_panic_regression_tests() {
     ] {
         bat()
             .arg("--color=always")
-            .arg(&format!("regression_tests/{filename}"))
+            .arg(format!("regression_tests/{filename}"))
             .assert()
             .success();
     }
@@ -1845,7 +1845,7 @@ fn do_not_detect_different_syntax_for_stdin_and_files() {
     let cmd_for_file = bat()
         .arg("--color=always")
         .arg("--map-syntax=*.js:Markdown")
-        .arg(&format!("--file-name={file}"))
+        .arg(format!("--file-name={file}"))
         .arg("--style=plain")
         .arg(file)
         .assert()
@@ -1855,7 +1855,7 @@ fn do_not_detect_different_syntax_for_stdin_and_files() {
         .arg("--color=always")
         .arg("--map-syntax=*.js:Markdown")
         .arg("--style=plain")
-        .arg(&format!("--file-name={file}"))
+        .arg(format!("--file-name={file}"))
         .pipe_stdin(Path::new(EXAMPLES_DIR).join(file))
         .unwrap()
         .assert()
@@ -1874,7 +1874,7 @@ fn no_first_line_fallback_when_mapping_to_invalid_syntax() {
     bat()
         .arg("--color=always")
         .arg("--map-syntax=*.invalid-syntax:InvalidSyntax")
-        .arg(&format!("--file-name={file}"))
+        .arg(format!("--file-name={file}"))
         .arg("--style=plain")
         .arg(file)
         .assert()