diff --git a/changes/bug22246 b/changes/bug22246
new file mode 100644
index 0000000000..dbdf31a433
--- /dev/null
+++ b/changes/bug22246
@@ -0,0 +1,6 @@
+  o Major bugfixes (hidden service directory, security):
+    - Fix an assertion failure in the hidden service directory code, which
+      could be used by an attacker to remotely cause a Tor relay process to
+      exit. Relays running earlier versions of Tor 0.3.0.x should upgrade.
+      This security issue is tracked as tracked as
+      TROVE-2017-002. Fixes bug 22246; bugfix on 0.3.0.1-alpha.
diff --git a/src/or/main.c b/src/or/main.c
index 9f0c29cf0b..670535b5d5 100644
--- a/src/or/main.c
+++ b/src/or/main.c
@@ -3006,6 +3006,7 @@ tor_init(int argc, char *argv[])
   rep_hist_init();
   /* Initialize the service cache. */
   rend_cache_init();
+  hs_cache_init();
   addressmap_init(); /* Init the client dns cache. Do it always, since it's
                       * cheap. */