diff --git a/chunihook/chuni-dll.c b/chunihook/chuni-dll.c
index 3750c86..24efa5c 100644
--- a/chunihook/chuni-dll.c
+++ b/chunihook/chuni-dll.c
@@ -18,9 +18,6 @@ const struct dll_bind_sym chuni_dll_syms[] = {
     }, {
         .sym = "chuni_io_jvs_read_coin_counter",
         .off = offsetof(struct chuni_dll, jvs_read_coin_counter),
-    }, {
-        .sym = "chuni_io_jvs_set_coin_blocker",
-        .off = offsetof(struct chuni_dll, jvs_set_coin_blocker),
     }, {
         .sym = "chuni_io_slider_init",
         .off = offsetof(struct chuni_dll, slider_init),
diff --git a/chunihook/chuni-dll.h b/chunihook/chuni-dll.h
index e4a24f8..ecd88ee 100644
--- a/chunihook/chuni-dll.h
+++ b/chunihook/chuni-dll.h
@@ -9,7 +9,6 @@ struct chuni_dll {
     HRESULT (*jvs_init)(void);
     void (*jvs_poll)(uint8_t *opbtn, uint8_t *beams);
     void (*jvs_read_coin_counter)(uint16_t *total);
-    void (*jvs_set_coin_blocker)(bool open);
     HRESULT (*slider_init)(void);
     void (*slider_start)(chuni_io_slider_callback_t callback);
     void (*slider_stop)(void);
diff --git a/chunihook/chunihook.def b/chunihook/chunihook.def
index 5b310a5..2a90ab6 100644
--- a/chunihook/chunihook.def
+++ b/chunihook/chunihook.def
@@ -16,7 +16,6 @@ EXPORTS
     chuni_io_jvs_init
     chuni_io_jvs_poll
     chuni_io_jvs_read_coin_counter
-    chuni_io_jvs_set_coin_blocker
     chuni_io_slider_init
     chuni_io_slider_set_leds
     chuni_io_slider_start
diff --git a/chuniio/chuniio.c b/chuniio/chuniio.c
index 8813e68..4fffe69 100644
--- a/chuniio/chuniio.c
+++ b/chuniio/chuniio.c
@@ -75,9 +75,6 @@ void chuni_io_jvs_poll(uint8_t *opbtn, uint8_t *beams)
     }
 }
 
-void chuni_io_jvs_set_coin_blocker(bool open)
-{}
-
 HRESULT chuni_io_slider_init(void)
 {
     return S_OK;
diff --git a/chuniio/chuniio.h b/chuniio/chuniio.h
index 87e7e76..2a24600 100644
--- a/chuniio/chuniio.h
+++ b/chuniio/chuniio.h
@@ -68,11 +68,6 @@ void chuni_io_jvs_poll(uint8_t *opbtn, uint8_t *beams);
 
 void chuni_io_jvs_read_coin_counter(uint16_t *total);
 
-/* Set the state of the coin blocker. Parameter is true if the blocker is
-   disengaged (i.e. coins can be inserted) and false if the blocker is engaged
-   (i.e. the coin slot should be physically blocked). */
-
-void chuni_io_jvs_set_coin_blocker(bool open);
 
 /* Initialize touch slider emulation. This function will be called before any
    other chuni_io_slider_*() function calls.
diff --git a/divahook/diva-dll.c b/divahook/diva-dll.c
index c871dd9..2f5793e 100644
--- a/divahook/diva-dll.c
+++ b/divahook/diva-dll.c
@@ -18,9 +18,6 @@ const struct dll_bind_sym diva_dll_syms[] = {
     }, {
         .sym = "diva_io_jvs_read_coin_counter",
         .off = offsetof(struct diva_dll, jvs_read_coin_counter),
-    }, {
-        .sym = "diva_io_jvs_set_coin_blocker",
-        .off = offsetof(struct diva_dll, jvs_set_coin_blocker),
     }, {
         .sym = "diva_io_slider_init",
         .off = offsetof(struct diva_dll, slider_init),
diff --git a/divahook/diva-dll.h b/divahook/diva-dll.h
index fe78ff2..1e57947 100644
--- a/divahook/diva-dll.h
+++ b/divahook/diva-dll.h
@@ -9,7 +9,6 @@ struct diva_dll {
     HRESULT (*jvs_init)(void);
     void (*jvs_poll)(uint8_t *opbtn, uint8_t *beams);
     void (*jvs_read_coin_counter)(uint16_t *total);
-    void (*jvs_set_coin_blocker)(bool open);
     HRESULT (*slider_init)(void);
     void (*slider_start)(diva_io_slider_callback_t callback);
     void (*slider_stop)(void);
diff --git a/divahook/divahook.def b/divahook/divahook.def
index a8f5d10..d6a11d4 100644
--- a/divahook/divahook.def
+++ b/divahook/divahook.def
@@ -16,7 +16,6 @@ EXPORTS
     diva_io_jvs_init
     diva_io_jvs_poll
     diva_io_jvs_read_coin_counter
-    diva_io_jvs_set_coin_blocker
     diva_io_slider_init
     diva_io_slider_set_leds
     diva_io_slider_start
diff --git a/divaio/divaio.c b/divaio/divaio.c
index 7db2075..760e198 100644
--- a/divaio/divaio.c
+++ b/divaio/divaio.c
@@ -72,9 +72,6 @@ void diva_io_jvs_read_coin_counter(uint16_t *out)
     *out = diva_io_coins;
 }
 
-void diva_io_jvs_set_coin_blocker(bool open)
-{}
-
 HRESULT diva_io_slider_init(void)
 {
     return S_OK;
diff --git a/divaio/divaio.h b/divaio/divaio.h
index 202704e..bac3627 100644
--- a/divaio/divaio.h
+++ b/divaio/divaio.h
@@ -47,12 +47,6 @@ void diva_io_jvs_poll(uint8_t *opbtn, uint8_t *gamebtn);
 
 void diva_io_jvs_read_coin_counter(uint16_t *out);
 
-/* Set the state of the coin blocker. Parameter is true if the blocker is
-   disengaged (i.e. coins can be inserted) and false if the blocker is engaged
-   (i.e. the coin slot should be physically blocked). */
-
-void diva_io_jvs_set_coin_blocker(bool open);
-
 /* Initialize touch slider emulation. This function will be called before any
    other diva_io_slider_*() function calls.