diff --git a/app/build.gradle b/app/build.gradle
index 510755f..1ad5858 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId "com.github.axet.audiorecorder"
         minSdkVersion 16
         targetSdkVersion 23
-        versionCode 74
-        versionName "1.1.52"
+        versionCode 75
+        versionName "1.1.53"
     }
     signingConfigs {
         release {
diff --git a/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java b/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
index 5fc7bd1..9cc389a 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
@@ -815,7 +815,10 @@ public class RecordingActivity extends AppCompatActivity {
                 builder.setTitle("Error");
                 String msg = encoder.getException().getMessage();
                 if (msg.isEmpty()) {
-                    msg = encoder.getException().getClass().getSimpleName();
+                    Throwable t = encoder.getException();
+                    while (t.getCause() != null)
+                        t = t.getCause();
+                    msg = t.getClass().getSimpleName();
                 }
                 builder.setMessage(msg);
                 builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
diff --git a/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java b/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java
index ea24255..a044935 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/activities/SettingsActivity.java
@@ -250,12 +250,14 @@ public class SettingsActivity extends AppCompatPreferenceActivity implements Sha
 
             Preference rate = findPreference(MainApplication.PREFERENCE_ENCODING);
 
-            Map<String, MediaCodecInfo> mime = MuxerMP4.findEncoder("audio/mp4");
-
-            if (Build.VERSION.SDK_INT < 21 || mime.isEmpty()) {
+            if (Build.VERSION.SDK_INT < 21) {
                 getPreferenceScreen().removePreference(rate);
             } else {
-                bindPreferenceSummaryToValue(rate);
+                Map<String, MediaCodecInfo> mime = MuxerMP4.findEncoder("audio/mp4");
+                if (mime.isEmpty())
+                    getPreferenceScreen().removePreference(rate);
+                else
+                    bindPreferenceSummaryToValue(rate);
             }
 
             bindPreferenceSummaryToValue(findPreference(MainApplication.PREFERENCE_RATE));