diff --git a/src/java/azkaban/project/ProjectManager.java b/src/java/azkaban/project/ProjectManager.java
index f610e40..e718921 100644
--- a/src/java/azkaban/project/ProjectManager.java
+++ b/src/java/azkaban/project/ProjectManager.java
@@ -6,6 +6,7 @@ import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
+import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
@@ -178,7 +179,7 @@ public class ProjectManager {
projectLoader.updatePermission(newProject, creator.getUserId(), new Permission(Permission.Type.ADMIN), false);
// Add proxy user
- newProject.getProxyUsers().add(creator.getUserId());
+ newProject.addProxyUser(creator.getUserId());
try {
updateProjectSetting(newProject);
} catch (ProjectManagerException e) {
