diff --git a/codon/util/common.cpp b/codon/util/common.cpp
index 73742648..31fb3600 100644
--- a/codon/util/common.cpp
+++ b/codon/util/common.cpp
@@ -26,10 +26,10 @@ void compilationMessage(const std::string &header, const std::string &msg,
   case MessageGroupPos::HEAD:
     break;
   case MessageGroupPos::MID:
-    fmt::print("├─ ");
+    fmt::print(out, "├─ ");
     break;
   case MessageGroupPos::LAST:
-    fmt::print("╰─ ");
+    fmt::print(out, "╰─ ");
     break;
   }