diff --git a/src/ble/gatt_client.c b/src/ble/gatt_client.c
index a05e07032..5378d4c1e 100644
--- a/src/ble/gatt_client.c
+++ b/src/ble/gatt_client.c
@@ -194,14 +194,14 @@ static gatt_client_t * gatt_client_provide_context_for_handle_and_start_timer(hc
     return gatt_client;
 }
 
-static int is_ready(gatt_client_t * gatt_client){
+static bool is_ready(gatt_client_t * gatt_client){
     return gatt_client->gatt_client_state == P_READY;
 }
 
 int gatt_client_is_ready(hci_con_handle_t con_handle){
     gatt_client_t * gatt_client = gatt_client_provide_context_for_handle(con_handle);
     if (gatt_client == NULL) return 0;
-    return is_ready(gatt_client);
+    return is_ready(gatt_client) ? 1 : 0;
 }
 
 void gatt_client_mtu_enable_auto_negotiation(uint8_t enabled){
diff --git a/src/ble/gatt_client.h b/src/ble/gatt_client.h
index e7d0b9ae7..00006e1c6 100644
--- a/src/ble/gatt_client.h
+++ b/src/ble/gatt_client.h
@@ -272,7 +272,7 @@ void gatt_client_mtu_enable_auto_negotiation(uint8_t enabled);
 void gatt_client_send_mtu_negotiation(btstack_packet_handler_t callback, hci_con_handle_t con_handle);
 
 /** 
- * @brief Returns if the GATT client is ready to receive a query. It is used with daemon. 
+ * @brief Returns 1 if the GATT client is ready to receive a query. It is used with daemon. 
  * @param  con_handle
  * @return is_ready_status     0 - if no GATT client for con_handle is found, or is not ready, otherwise 1
  */