diff --git a/src/options.c b/src/options.c
index 6613fbd..b10cae8 100644
--- a/src/options.c
+++ b/src/options.c
@@ -369,7 +369,7 @@ void options_parse(int argc, char *argv[])
 
     if (strlen(option.tty_device) == 0)
     {
-        printf("Error: Missing device or config name\n");
+        printf("Error: Missing tty device or sub-configuration name\n");
         exit(EXIT_FAILURE);
     }