diff --git a/src/devices/machine/netlist.c b/src/devices/machine/netlist.c
index b5c50690d02..bf6ad42f88c 100644
--- a/src/devices/machine/netlist.c
+++ b/src/devices/machine/netlist.c
@@ -129,6 +129,7 @@ netlist_mame_logic_input_t::netlist_mame_logic_input_t(const machine_config &mco
 void netlist_mame_logic_input_t::static_set_params(device_t &device, const char *param_name, const UINT32 mask, const UINT32 shift)
 {
 	netlist_mame_logic_input_t &netlist = downcast<netlist_mame_logic_input_t &>(device);
+	LOG_DEV_CALLS(("static_set_params %s\n", device.tag()));
 	netlist.m_param_name = param_name;
 	netlist.m_shift = shift;
 	netlist.m_mask = mask;
diff --git a/src/devices/machine/netlist.h b/src/devices/machine/netlist.h
index 32b19070d4e..8b9bceb2b3d 100644
--- a/src/devices/machine/netlist.h
+++ b/src/devices/machine/netlist.h
@@ -114,7 +114,7 @@ public:
 	// construction/destruction
 	netlist_mame_device_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
 	netlist_mame_device_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *file);
-	virtual ~netlist_mame_device_t() {}
+	virtual ~netlist_mame_device_t() { pstring::resetmem(); }
 
 	static void static_set_constructor(device_t &device, void (*setup_func)(netlist::setup_t &));