diff --git a/tools/op.sh b/tools/op.sh
index d8a3f4b809..f7caa9d047 100755
--- a/tools/op.sh
+++ b/tools/op.sh
@@ -163,7 +163,7 @@ function op_install() {
       ;;
   esac
 
-  git submodules update --init --recursive
+  git submodule update --init --recursive
   git lfs pull
 
   )