diff --git a/compiler/erg_compiler/error.rs b/compiler/erg_compiler/error.rs
index fbfab343..85620c20 100644
--- a/compiler/erg_compiler/error.rs
+++ b/compiler/erg_compiler/error.rs
@@ -1465,13 +1465,13 @@ impl LowerError {
             "traditional_chinese" => format!("表達式評估結果(: {})未使用", expr.ref_t()),
             "english" => format!("the evaluation result of the expression (: {}) is not used", expr.ref_t()),
         );
+        let discard = StyledString::new("discard", Some(HINT), Some(ATTR));
         let hint = switch_lang!(
-            "japanese" => "値を使わない場合は、discard関数を使用してください",
-            "simplified_chinese" => "如果您不想使用该值，请使用discard函数",
-            "traditional_chinese" => "如果您不想使用該值，請使用discard函數",
-            "english" => "if you don't use the value, use discard function",
-        )
-        .to_owned();
+            "japanese" => format!("値を使わない場合は、{discard}関数を使用してください"),
+            "simplified_chinese" => format!("如果您不想使用该值，请使用{discard}函数"),
+            "traditional_chinese" => format!("如果您不想使用該值，請使用{discard}函數"),
+            "english" => format!("if you don't use the value, use {discard} function"),
+        );
         Self::new(
             ErrorCore::new(
                 vec![SubMessage::ambiguous_new(expr.loc(), vec![], Some(hint))],