1 files changed, 6 insertions, 0 deletions
diff --git a/cpp/src/IceStorm/Instance.cpp b/cpp/src/IceStorm/Instance.cpp
index c894184865b..0e95d765763 100644
--- a/cpp/src/IceStorm/Instance.cpp
+++ b/cpp/src/IceStorm/Instance.cpp
@@ -268,4 +268,10 @@ Instance::destroy()
     // replica (TopicManager) which holds the instance causing a
     // cyclic reference.
     _node = 0;
+    //
+    // The observer instance must be cleared as it holds the
+    // TopicManagerImpl which hodlds the instance causing a 
+    // cyclic reference.
+    //
+    _observer = 0;
 }