diff --git a/app/build.gradle b/app/build.gradle
index 8ed89b0..a46dd27 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 31
+    compileSdkVersion 30
     buildToolsVersion "30.0.3"
     defaultConfig {
         applicationId 'it.cnr.isti.steplogger'
         minSdkVersion 24
-        targetSdkVersion 31
+        targetSdkVersion 24
         versionCode 1
         versionName '1.0'
     }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e9a9b43..a3d885a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -14,12 +14,11 @@
         android:label="@string/app_name"
         android:theme="@style/AppTheme"
         android:requestLegacyExternalStorage="true"
-
         >
         <activity
             android:name="it.cnr.isti.steplogger.StepLoggerActivity"
             android:label="@string/app_name"
-            android:exported="true">
+>
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -29,7 +28,7 @@
         <activity
             android:name="it.cnr.isti.steplogger.SettingsActivity"
             android:label="@string/pref_title"
-            android:exported="false">
+            >
         </activity>
 
         <service
@@ -39,7 +38,7 @@
             android:process=":remote">
 
             <intent-filter>
-                <action android:name=".IStepLoggerService.aidl" />
+                <action android:name=".IStepLoggerService.aidl"/>
             </intent-filter>
         </service>
     </application>