diff --git a/Jenkinsfile b/Jenkinsfile
index 8f5057f..7620553 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -3,9 +3,9 @@ def build_docker(name) {
     echo "Build image ${image}"
 	def pref = ""
     if (env.DOCKER_PREFIX) {
-        pref = "${env.DOCKER_PREFIX}/"
+        pref = "--build-arg DOCKER_PREFIX=${env.DOCKER_PREFIX}/"
 	}
-	def args = "--build-arg DOCKER_PREFIX=${pref} --build-arg LIBS_BUILD_NUMBER=${env.BUILD_NUMBER} --build-arg JOBS_COUNT=4"
+	def args = "${pref} --build-arg LIBS_BUILD_NUMBER=${env.BUILD_NUMBER} --build-arg JOBS_COUNT=4"
 	dir ("docker/${image}") {
 	    //echo "build ${image} ${args}"
 	    sh "docker build ${args} --no-cache -t ${image} ."