diff --git a/tools/droiddoc/src/ClassInfo.java b/tools/droiddoc/src/ClassInfo.java
index 36edbf8..a3fcc92 100644
--- a/tools/droiddoc/src/ClassInfo.java
+++ b/tools/droiddoc/src/ClassInfo.java
@@ -1193,7 +1193,7 @@
         ClassInfo cl = this;
         while (cl != null) {
             PackageInfo pkg = cl.containingPackage();
-            if (pkg.isHidden()) {
+            if (pkg != null && pkg.isHidden()) {
                 return true;
             }
             if (cl.comment().isHidden()) {