diff --git a/flake8_to_ruff/src/parser.rs b/flake8_to_ruff/src/parser.rs
index 257f1c0348cf8..3845131828003 100644
--- a/flake8_to_ruff/src/parser.rs
+++ b/flake8_to_ruff/src/parser.rs
@@ -127,7 +127,7 @@ fn tokenize_files_to_codes_mapping(value: &str) -> Vec<Token> {
                 if mat.start() == 0 {
                     tokens.push(Token {
                         token_name,
-                        src: mat.as_str().to_string().trim().to_string(),
+                        src: mat.as_str().trim().to_string(),
                     });
                     i += mat.end();
                     break;