diff --git a/das-dn/hostadsbf/hostadsbf.cpp b/das-dn/hostadsbf/hostadsbf.cpp
index 7cdc8d2e..6de3f500 100644
--- a/das-dn/hostadsbf/hostadsbf.cpp
+++ b/das-dn/hostadsbf/hostadsbf.cpp
@@ -996,6 +996,8 @@ BOOLEAN CHostADSBFProcess::OnTimer(void)
         if (!m_turbine->IsConnected())
         {
             vLog(LOG_DEBUG, "%s device not connected.\n", m_pidName.c_str());
+            delete m_turbine;
+            m_turbine = NULL;
             return TRUE;
         }
         m_apdu_t0_begin = system32.timers;