diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4d5f364..78a8970 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -21,7 +21,7 @@ jobs:
             sudo apt-get install libcurl4-openssl-dev libboost-dev
       - run:
           name: "Build"
-          command: "make -J 3"
+          command: "make -j 3"
 
 # Invoke jobs via workflows
 # See: https://circleci.com/docs/2.0/configuration-reference/#workflows