diff --git a/nimble/controller/src/ble_ll_conn_hci.c b/nimble/controller/src/ble_ll_conn_hci.c
index ce0911f33..22dbd716b 100644
--- a/nimble/controller/src/ble_ll_conn_hci.c
+++ b/nimble/controller/src/ble_ll_conn_hci.c
@@ -1464,7 +1464,7 @@ ble_ll_conn_hci_wr_auth_pyld_tmo(uint8_t *cmdbuf, uint8_t *rsp, uint8_t *rsplen)
         rc = BLE_ERR_INV_HCI_CMD_PARMS;
     } else {
         connsm->auth_pyld_tmo = tmo;
-        if (ble_npl_callout_queued(&connsm->auth_pyld_timer)) {
+        if (ble_npl_callout_is_active(&connsm->auth_pyld_timer)) {
             ble_ll_conn_auth_pyld_timer_start(connsm);
         }
     }
diff --git a/nimble/host/src/ble_hs.c b/nimble/host/src/ble_hs.c
index 9410c6727..05975d5f0 100644
--- a/nimble/host/src/ble_hs.c
+++ b/nimble/host/src/ble_hs.c
@@ -430,7 +430,7 @@ ble_hs_timer_sched(int32_t ticks_from_now)
      * sooner than the previous expiration time.
      */
     abs_time = ble_npl_time_get() + ticks_from_now;
-    if (!ble_npl_callout_queued(&ble_hs_timer_timer) ||
+    if (!ble_npl_callout_is_active(&ble_hs_timer_timer) ||
             ((ble_npl_stime_t)(abs_time -
                                ble_npl_callout_get_ticks(&ble_hs_timer_timer))) < 0) {
         ble_hs_timer_reset(ticks_from_now);
diff --git a/nimble/include/nimble/nimble_npl.h b/nimble/include/nimble/nimble_npl.h
index 49c775b31..713c3a415 100644
--- a/nimble/include/nimble/nimble_npl.h
+++ b/nimble/include/nimble/nimble_npl.h
@@ -124,7 +124,7 @@ int ble_npl_callout_reset(struct ble_npl_callout *co, ble_npl_time_t ticks);
 
 void ble_npl_callout_stop(struct ble_npl_callout *co);
 
-int ble_npl_callout_queued(struct ble_npl_callout *co);
+bool ble_npl_callout_is_active(struct ble_npl_callout *co);
 
 uint32_t ble_npl_callout_get_ticks(struct ble_npl_callout *co);
 
diff --git a/porting/npl/dummy/src/npl_os_dummy.c b/porting/npl/dummy/src/npl_os_dummy.c
index ba7f538d9..699621aaf 100644
--- a/porting/npl/dummy/src/npl_os_dummy.c
+++ b/porting/npl/dummy/src/npl_os_dummy.c
@@ -146,10 +146,10 @@ ble_npl_callout_stop(struct ble_npl_callout *co)
 
 }
 
-int
-ble_npl_callout_queued(struct ble_npl_callout *c)
+bool
+ble_npl_callout_is_active(struct ble_npl_callout *c)
 {
-    return 0;
+    return false;
 }
 
 ble_npl_time_t
diff --git a/porting/npl/freertos/include/nimble/nimble_npl_os.h b/porting/npl/freertos/include/nimble/nimble_npl_os.h
index 51bd95990..3a7b83589 100644
--- a/porting/npl/freertos/include/nimble/nimble_npl_os.h
+++ b/porting/npl/freertos/include/nimble/nimble_npl_os.h
@@ -222,8 +222,8 @@ ble_npl_callout_stop(struct ble_npl_callout *co)
     xTimerStop(co->handle, portMAX_DELAY);
 }
 
-static inline int
-ble_npl_callout_queued(struct ble_npl_callout *co)
+static inline bool
+ble_npl_callout_is_active(struct ble_npl_callout *co)
 {
     return xTimerIsTimerActive(co->handle) == pdTRUE;
 }
diff --git a/porting/npl/mynewt/include/nimble/nimble_npl_os.h b/porting/npl/mynewt/include/nimble/nimble_npl_os.h
index c3ce86194..c53d98814 100644
--- a/porting/npl/mynewt/include/nimble/nimble_npl_os.h
+++ b/porting/npl/mynewt/include/nimble/nimble_npl_os.h
@@ -210,8 +210,8 @@ ble_npl_callout_stop(struct ble_npl_callout *co)
     os_callout_stop(&co->co);
 }
 
-static inline int
-ble_npl_callout_queued(struct ble_npl_callout *co)
+static inline bool
+ble_npl_callout_is_active(struct ble_npl_callout *co)
 {
     return os_callout_queued(&co->co);
 }