diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 4c8b01d..08b5baa 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -25,7 +25,7 @@
 -keepclassmembers class sushi.hardcore.droidfs.explorers.ExplorerElement {
     static sushi.hardcore.droidfs.explorers.ExplorerElement new(...);
 }
--keepclassmembers class sushi.hardcore.droidfs.video_recording.MediaMuxer {
+-keepclassmembers class sushi.hardcore.droidfs.video_recording.FFmepgMuxer {
     void writePacket(byte[]);
     void seek(long);
 }
\ No newline at end of file