diff --git a/src/vm/VirtualMachine.cc b/src/vm/VirtualMachine.cc
index d486fdb1b0..22d5f11f64 100644
--- a/src/vm/VirtualMachine.cc
+++ b/src/vm/VirtualMachine.cc
@@ -62,6 +62,11 @@ VirtualMachine::~VirtualMachine()
         delete history;
     }
 
+    if ( previous_history != 0 )
+    {
+        delete previous_history;
+    }
+
     if ( _log != 0 )
     {
         delete _log;