diff --git a/src/java/azkaban/project/ProjectManager.java b/src/java/azkaban/project/ProjectManager.java
index d61671b..f1ce489 100644
--- a/src/java/azkaban/project/ProjectManager.java
+++ b/src/java/azkaban/project/ProjectManager.java
@@ -229,7 +229,10 @@ public class ProjectManager {
// Unzip.
File file = null;
try {
- if ("zip".equals(fileType)) {
+ if (fileType == null) {
+ throw new ProjectManagerException("Unknown file type for " + archive.getName());
+ }
+ else if ("zip".equals(fileType)) {
file = unzipFile(archive);
}
else {
