diff --git a/parser/src/parser.rs b/parser/src/parser.rs
index 196826a41..9115e7b99 100644
--- a/parser/src/parser.rs
+++ b/parser/src/parser.rs
@@ -4019,7 +4019,7 @@ mod tests {
         for tc in testcases {
             let mut p = Parser::new(tc.as_bytes());
             let result = p.next_cmd();
-            assert!(result.is_err(), "Expected error for: {}", tc);
+            assert!(result.is_err(), "Expected error for: {tc}");
         }
     }