diff --git a/src/main.c b/src/main.c
index 9bfd1448f..a3bcdb866 100644
--- a/src/main.c
+++ b/src/main.c
@@ -186,11 +186,14 @@ static int parse_args(int argc, char **argv, int *exitcode)
         else {
             const char *arg;
             switch (argi[1]) {
-            case 'r':
             case 'c':
                 i = get_arg(argc, argv, 2, i, &arg, 0);
                 config_set("config.path", arg);
                 break;
+            case 'r':
+                i = get_arg(argc, argv, 2, i, &arg, 0);
+                config_set("config.rules", arg);
+                break;
             case 'f':
                 i = get_arg(argc, argv, 2, i, &luafile, 0);
                 break;