diff --git a/src/lib.rs b/src/lib.rs
index 83fc07e..1807bbe 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,6 +3,7 @@
 #![allow(clippy::single_match)]
 #![allow(static_mut_refs)]
 #![feature(decl_macro)]
+#![feature(get_mut_unchecked)]
 #![doc = include_str!("../README.md")]
 extern crate alloc;
 
diff --git a/src/server/ble_characteristic.rs b/src/server/ble_characteristic.rs
index e3e3d28..823671a 100644
--- a/src/server/ble_characteristic.rs
+++ b/src/server/ble_characteristic.rs
@@ -12,7 +12,7 @@ use crate::cpfd::Cpfd;
 
 use crate::{
   utilities::{
-    as_mut_ptr, ble_npl_hw_enter_critical, ble_npl_hw_exit_critical, mutex::Mutex, os_mbuf_append,
+    ble_npl_hw_enter_critical, ble_npl_hw_exit_critical, mutex::Mutex, os_mbuf_append,
     voidp_to_ref, BleUuid,
   },
   AttValue, BLEConnDesc, BLEDescriptor, BLEDevice, DescriptorProperties, OnWriteArgs, BLE2904,
@@ -206,8 +206,8 @@ impl BLECharacteristic {
     }
     self.svc_def_descriptors.clear();
 
-    for dsc in &self.descriptors {
-      let arg = unsafe { as_mut_ptr(Arc::into_raw(dsc.clone())) };
+    for dsc in &mut self.descriptors {
+      let arg = unsafe { Arc::get_mut_unchecked(dsc) } as *mut Mutex<BLEDescriptor>;
       let dsc = dsc.lock();
       self
         .svc_def_descriptors
diff --git a/src/server/ble_service.rs b/src/server/ble_service.rs
index a2fdc88..e8dc479 100644
--- a/src/server/ble_service.rs
+++ b/src/server/ble_service.rs
@@ -3,7 +3,7 @@ use esp_idf_sys::ble_uuid_any_t;
 
 use crate::{
   ble,
-  utilities::{as_mut_ptr, mutex::Mutex, BleUuid},
+  utilities::{mutex::Mutex, BleUuid},
   BLECharacteristic, BLEError,
 };
 
@@ -43,10 +43,9 @@ impl BLEService {
 
       if self.characteristics.is_empty() {
       } else {
-        for chr in &self.characteristics {
-          let arg = unsafe { as_mut_ptr(Arc::into_raw(chr.clone())) };
+        for chr in &mut self.characteristics {
+          let arg = unsafe { Arc::get_mut_unchecked(chr) } as *mut Mutex<BLECharacteristic>;
           let mut chr = chr.lock();
-
           self
             .svc_def_characteristics
             .push(esp_idf_sys::ble_gatt_chr_def {