diff --git a/tools/releasetools/sign_apex.py b/tools/releasetools/sign_apex.py
index f2daa46..4c0850c 100755
--- a/tools/releasetools/sign_apex.py
+++ b/tools/releasetools/sign_apex.py
@@ -44,7 +44,7 @@
 
 
 def SignApexFile(avbtool, apex_file, payload_key, container_key,
-                 signing_args=None):
+                 no_hashtree, signing_args=None):
   """Signs the given apex file."""
   with open(apex_file, 'rb') as input_fp:
     apex_data = input_fp.read()
@@ -56,7 +56,7 @@
       container_key=container_key,
       container_pw=None,
       codename_to_api_level_map=None,
-      no_hashtree=False,
+      no_hashtree=no_hashtree,
       signing_args=signing_args)