diff --git a/src/feature/hs/hs_common.c b/src/feature/hs/hs_common.c
index b2b52c480e..4639cdb68a 100644
--- a/src/feature/hs/hs_common.c
+++ b/src/feature/hs/hs_common.c
@@ -22,6 +22,7 @@
 #include "feature/hs/hs_client.h"
 #include "feature/hs/hs_common.h"
 #include "feature/hs/hs_dos.h"
+#include "feature/hs/hs_ob.h"
 #include "feature/hs/hs_ident.h"
 #include "feature/hs/hs_service.h"
 #include "feature/hs_common/shared_random_client.h"
@@ -1829,6 +1830,7 @@ hs_free_all(void)
   hs_service_free_all();
   hs_cache_free_all();
   hs_client_free_all();
+  hs_ob_free_all();
 }
 
 /** For the given origin circuit circ, decrement the number of rendezvous
diff --git a/src/feature/hs/hs_ob.c b/src/feature/hs/hs_ob.c
index 69fc51a8a0..6a2e43f050 100644
--- a/src/feature/hs/hs_ob.c
+++ b/src/feature/hs/hs_ob.c
@@ -394,3 +394,10 @@ hs_ob_refresh_keys(hs_service_t *service)
   service->ob_subcreds = ob_subcreds;
   service->n_ob_subcreds = num_subcreds;
 }
+
+/** Free any memory allocated by the onionblance subsystem. */
+void
+hs_ob_free_all(void)
+{
+  config_mgr_free(config_options_mgr);
+}