error: fix warning about formatting string

diff --git a/src/error.c b/src/error.c
index e80d034..7f6b8c9 100644 (file)
--- a/src/error.c
+++ b/src/error.c
@@ -68,7 +68,7 @@ DBusMessage *__connman_error_failed(DBusMessage *msg, int errnum)
        }
 
        return g_dbus_create_error(msg, CONNMAN_ERROR_INTERFACE
-                                                       ".Failed", str);
+                                       ".Failed", "%s", str);
 }
 
 DBusMessage *__connman_error_invalid_arguments(DBusMessage *msg)