diff --git a/src/mame/machine/bfm_bd1.h b/src/mame/machine/bfm_bd1.h
index 7542dedfeef..ae40cae1e5a 100644
--- a/src/mame/machine/bfm_bd1.h
+++ b/src/mame/machine/bfm_bd1.h
@@ -13,10 +13,8 @@
 class bfm_bd1_t : public device_t
 {
 public:
-	typedef delegate<void (bool state)> line_cb;
 	bfm_bd1_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
 
-
 	// inline configuration helpers
 	static void static_set_value(device_t &device, int val);
 
diff --git a/src/mame/machine/bfm_bda.h b/src/mame/machine/bfm_bda.h
index 07da9cb584a..6e7153a4ea6 100644
--- a/src/mame/machine/bfm_bda.h
+++ b/src/mame/machine/bfm_bda.h
@@ -13,10 +13,8 @@
 class bfm_bda_t : public device_t
 {
 public:
-	typedef delegate<void (bool state)> line_cb;
 	bfm_bda_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
 
-
 	// inline configuration helpers
 	static void static_set_value(device_t &device, int val);
 
diff --git a/src/mess/machine/esqvfd.h b/src/mess/machine/esqvfd.h
index 51f7011a099..25ca6c503a9 100644
--- a/src/mess/machine/esqvfd.h
+++ b/src/mess/machine/esqvfd.h
@@ -23,8 +23,6 @@
 
 class esqvfd_t : public device_t {
 public:
-	typedef delegate<void (bool state)> line_cb;
-
 	esqvfd_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
 
 	DECLARE_WRITE8_MEMBER( write ) { write_char(data); }