diff --git a/app/build.gradle b/app/build.gradle
index b1a9ba0..5f97e01 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,8 +10,8 @@ android {
         applicationId "com.github.axet.audiorecorder"
         minSdkVersion 9
         targetSdkVersion 26 // 24+ file:// unable to open
-        versionCode 287
-        versionName "3.2.29"
+        versionCode 288
+        versionName "3.2.30"
     }
     signingConfigs {
         release {
diff --git a/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java b/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java
index 2d70a88..b4feb90 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/services/RecordingService.java
@@ -152,7 +152,6 @@ public class RecordingService extends Service {
         super.onDestroy();
         Log.d(TAG, "onDestory");
         showNotification(false, null);
-        wlcpu.release();
     }
 
     @SuppressLint("RestrictedApi")