diff --git a/Jenkinsfile b/Jenkinsfile
index faa665771c71e3cb7d2d13b4588441e5612716a8..e0cb3185a357fe02bf0958444c099908dcfef8a6 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -35,7 +35,7 @@ def getStages(rosDistribution, ubuntuVersion) {
         }
 
         docker.build("franka_ros-ci-worker:${rosDistribution}",
-                     "-f src/franka_ros/.ci/Dockerfile.${rosDistribution} src/franka_ros/.ci").inside {
+                     "-f src/franka_ros/.ci/Dockerfile.${rosDistribution} src/franka_ros/.ci").inside('-e MAKEFLAGS') {
           withEnv(["CMAKE_PREFIX_PATH+=${env.WORKSPACE}/dist/libfranka/lib/cmake/Franka",
                    "ROS_HOME=${env.WORKSPACE}/ros-home"]) {
             stage("${rosDistribution}: Build & Lint (Debug)") {