diff --git a/src/donar.c b/src/donar.c
index 6aa704a..825977d 100644
--- a/src/donar.c
+++ b/src/donar.c
@@ -62,11 +62,11 @@ int main(int argc, char** argv) {
 
     if (is_server) {
       struct donar_server_ctx ctx;
-      if (exposed_ports->len < 1 && remote_ports->len) goto in_error;
+      if (exposed_ports->len < 1 && remote_ports->len < 1) goto in_error;
       donar_server(&ctx, &as, exposed_ports, remote_ports);
     } else if (is_client) {
       struct donar_client_ctx ctx;
-      if ((exposed_ports->len < 1 && remote_ports->len) || onion_file == NULL) goto in_error;
+      if ((exposed_ports->len < 1 && remote_ports->len < 1) || onion_file == NULL) goto in_error;
       donar_client(&ctx, &as, onion_file, exposed_ports, remote_ports);
     }
     goto terminate;