diff --git a/libs/wuff-plugin/src/main/groovy/org/akhikhl/wuff/ManifestUtils.groovy b/libs/wuff-plugin/src/main/groovy/org/akhikhl/wuff/ManifestUtils.groovy
index 1b20a74..e89874b 100644
--- a/libs/wuff-plugin/src/main/groovy/org/akhikhl/wuff/ManifestUtils.groovy
+++ b/libs/wuff-plugin/src/main/groovy/org/akhikhl/wuff/ManifestUtils.groovy
@@ -70,9 +70,16 @@ class ManifestUtils {
       into tmpFolder
     }
     Manifest manifest
-    manifestFile.withInputStream {
-      manifest = new Manifest(it)
+
+    if(manifestFile.exists()) {
+      manifestFile.withInputStream {
+        manifest = new Manifest(it)
+      }
+      assert manifestFile.delete()
+    } else {
+      manifest = new Manifest()
     }
+
     return manifest
   }