diff --git a/hal/mbed_lp_ticker_api.c b/hal/mbed_lp_ticker_api.c
index f9cf2b2..fbf72c3 100644
--- a/hal/mbed_lp_ticker_api.c
+++ b/hal/mbed_lp_ticker_api.c
@@ -35,6 +35,7 @@
 #endif
     .fire_interrupt = lp_ticker_fire_interrupt,
     .get_info = lp_ticker_get_info,
+    .free = lp_ticker_free,
 };
 
 static const ticker_data_t lp_data = {
diff --git a/hal/mbed_us_ticker_api.c b/hal/mbed_us_ticker_api.c
index 9b025fa..433a035 100644
--- a/hal/mbed_us_ticker_api.c
+++ b/hal/mbed_us_ticker_api.c
@@ -27,6 +27,7 @@
     .set_interrupt = us_ticker_set_interrupt,
     .fire_interrupt = us_ticker_fire_interrupt,
     .get_info = us_ticker_get_info,
+    .free = us_ticker_free,
 };
 
 static const ticker_data_t us_data = {
diff --git a/hal/ticker_api.h b/hal/ticker_api.h
index 661bd80..6dfa3d8 100644
--- a/hal/ticker_api.h
+++ b/hal/ticker_api.h
@@ -64,6 +64,7 @@
     void (*clear_interrupt)(void);                /**< Clear interrupt function */
     void (*set_interrupt)(timestamp_t timestamp); /**< Set interrupt function */
     void (*fire_interrupt)(void);                 /**< Fire interrupt right-away */
+    void (*free)(void);                           /**< Disable function */
     const ticker_info_t *(*get_info)(void);       /**< Return info about this ticker's implementation */
 } ticker_interface_t;