diff --git a/vars/buildStep.groovy b/vars/buildStep.groovy
index 6478b2b..2c282de 100644
--- a/vars/buildStep.groovy
+++ b/vars/buildStep.groovy
@@ -1,15 +1,11 @@
 #!/usr/bin/env groovy
 
-import groovy.transform.Field
-
-@Field
-Map defaults = [
-    saveArtifaces: false,
-    buildTest: 'Makefile',
-    buildCmd: 'make all'
-]
-
-def call(Map config = [:]) {
+void call(Map config = [:]) {
+    Map defaults = [
+        saveArtifaces: false,
+        buildTest: 'Makefile',
+        buildCmd: 'make all'
+    ]
     Map runConfig = defaults + config
     if (runConfig.saveArtifacts) {
         assert runConfig.artifacts : 'Error: saveArtifacts is set to true; must specify artifacts!'
@@ -22,7 +18,7 @@ def call(Map config = [:]) {
         error("ERROR: File ${runConfig.buildTest} does not exist in workspace.")
     }
     if (runConfig.saveArtifacts) {
-        artifactsList = runConfig.artifacts.inspect().replaceAll('[\\[\\]\'\"]','')
+        artifactsList = runConfig.artifacts.inspect().replaceAll('[\\[\\]\'\"]', '')
         archiveArtifacts artifacts: artifactsList, followSymlinks: false
     }
 }