diff --git a/src/sysc/utils/sc_temporary.h b/src/sysc/utils/sc_temporary.h
index 152b0f913..86cf9e048 100644
--- a/src/sysc/utils/sc_temporary.h
+++ b/src/sysc/utils/sc_temporary.h
@@ -94,6 +94,7 @@ class SC_API sc_byte_heap {
     {
         delete [] m_bgn_p;
         m_bgn_p = new char[heap_size];
+        std::memset(m_bgn_p, 0, heap_size);
         m_end_p = &m_bgn_p[heap_size];
         m_next_p = m_bgn_p;
     }
diff --git a/src/tlm_utils/simple_target_socket.h b/src/tlm_utils/simple_target_socket.h
index 7e4c3a197..d39dcee65 100644
--- a/src/tlm_utils/simple_target_socket.h
+++ b/src/tlm_utils/simple_target_socket.h
@@ -548,7 +548,7 @@ class simple_target_socket_b
   bw_process m_bw_process;
   std::map<transaction_type*, sc_core::sc_event *> m_pending_trans;
   sc_core::sc_event m_end_request;
-  transaction_type* m_current_transaction;
+  transaction_type* m_current_transaction = NULL;
 };
 
 template< typename MODULE, unsigned int BUSWIDTH = 32