diff --git a/mu/mu-cmd-script.cc b/mu/mu-cmd-script.cc
index 096f1cfc..d1b281d3 100644
--- a/mu/mu-cmd-script.cc
+++ b/mu/mu-cmd-script.cc
@@ -36,7 +36,7 @@ Mu::mu_cmd_script(const Options& opts)
 
 	if (script_it == scriptinfos.cend())
 		return Err(Error::Code::InvalidArgument,
-			   "cannot find script '%s'", opts.script.name);
+			   "cannot find script '%s'", opts.script.name.c_str());
 
 	std::vector<std::string> params{opts.script.params};
 	if (!opts.muhome.empty()) {