diff --git a/updater/install.c b/updater/install.c
index ba27e9f..41f053d 100644
--- a/updater/install.c
+++ b/updater/install.c
@@ -901,7 +901,7 @@
 
     int result = applypatch(source_filename, target_filename,
                             target_sha1, target_size,
-                            patchcount, patch_sha_str, patches);
+                            patchcount, patch_sha_str, patches, NULL);
 
     for (i = 0; i < patchcount; ++i) {
         FreeValue(patches[i]);