diff --git a/first-class-pipeline/src/com/freeleaps/devops/ImageBuilder.groovy b/first-class-pipeline/src/com/freeleaps/devops/ImageBuilder.groovy
index 9722228c..b8539a7c 100644
--- a/first-class-pipeline/src/com/freeleaps/devops/ImageBuilder.groovy
+++ b/first-class-pipeline/src/com/freeleaps/devops/ImageBuilder.groovy
@@ -27,7 +27,7 @@ class ImageBuilder {
       architectures = ['linux/amd64']
     }
 
-    steps.withCredentials([usernamePassword(credentialsId: registryCredentialsId, passwordVariable: 'DOCKER_PASSWORD', usernameVariable: 'DOCKER_USERNAME')]) {
+    steps.withCredentials([steps.usernamePassword(credentialsId: registryCredentialsId, passwordVariable: 'DOCKER_PASSWORD', usernameVariable: 'DOCKER_USERNAME')]) {
       steps.log.info("ImageBuilder", "Authentication to ${registry}")
       switch(builderType) {
         case ImageBuilderTypes.DOCKER_IN_DOCKER: