diff --git a/main.cpp b/main.cpp
index 13ef49debdd76aec997cc518ecdc0c090e609a0c..15b3975268f76cccbd87da6cc543f696fd406627 100644
--- a/main.cpp
+++ b/main.cpp
@@ -11,6 +11,8 @@ int main(int argc, char *argv[])
 
   long number = 1000;
   app.add_option("-n,--number", number, "A big integer");
+  int threads=-1;
+  app.add_option("--threads", threads, "Number of Kokkos threads");
 
   CLI11_PARSE(app, argc, argv);