diff --git a/src/ripple/peerfinder/impl/Manager.cpp b/src/ripple/peerfinder/impl/Manager.cpp
index 1f35fa92e1..06635a3c95 100644
--- a/src/ripple/peerfinder/impl/Manager.cpp
+++ b/src/ripple/peerfinder/impl/Manager.cpp
@@ -264,6 +264,7 @@ public:
 
     ~ManagerImp ()
     {
+        stopThread ();
     }
 
     //--------------------------------------------------------------------------
diff --git a/src/ripple/sitefiles/impl/Manager.cpp b/src/ripple/sitefiles/impl/Manager.cpp
index 5e3a0d1b79..2808f6aebc 100644
--- a/src/ripple/sitefiles/impl/Manager.cpp
+++ b/src/ripple/sitefiles/impl/Manager.cpp
@@ -56,6 +56,7 @@ public:
 
     ~ManagerImp ()
     {
+        stopThread ();
     }
 
     //--------------------------------------------------------------------------