diff --git a/src/console_cmds.cpp b/src/console_cmds.cpp
--- a/src/console_cmds.cpp
+++ b/src/console_cmds.cpp
@@ -1606,7 +1606,7 @@ DEF_CONSOLE_CMD(ConDebugLevel)
 	if (argc == 1) {
 		IConsolePrint(CC_DEFAULT, "Current debug-level: '{}'", GetDebugString());
 	} else {
-		SetDebugString(argv[1], [](const char *err) { IConsolePrint(CC_ERROR, std::string(err)); });
+		SetDebugString(argv[1], [](const std::string &err) { IConsolePrint(CC_ERROR, err); });
 	}
 
 	return true;