diff --git a/build/tools/mk_sources_zip.py b/build/tools/mk_sources_zip.py
index 4aaa714da..76b5b9e7c 100755
--- a/build/tools/mk_sources_zip.py
+++ b/build/tools/mk_sources_zip.py
@@ -39,7 +39,7 @@ class Params(object):
         self.CNT_NOPKG = 0
         # DIR is the list of directories to scan in TOPDIR.
         self.DIR = "frameworks libcore"
-        self.IGNORE_DIR = [ "hosttests" ]
+        self.IGNORE_DIR = [ "hosttests" "tools" "tests" ]
         # IGNORE is a list of namespaces to ignore. Must be java
         # package definitions (e.g. "com.blah.foo.")
         self.IGNORE = [ "sun.", "libcore.", "dalvik.",