diff --git a/src/prefs/media/Media.h b/src/prefs/media/Media.h
index a62dd31304..d867400ff7 100644
--- a/src/prefs/media/Media.h
+++ b/src/prefs/media/Media.h
@@ -18,7 +18,7 @@
 #define __MEDIA_H__
 
 // Constants ------------------------------------------------------------------------------------------------- //
-const char *APP_SIGNATURE = "application/x-vnd.OBOS.Media";  // Application Signature and Title
+const char *APP_SIGNATURE = "application/x-vnd.haiku.Media";  // Application Signature and Title
 
 #include <Application.h>
 #include "MediaWindow.h"
diff --git a/src/prefs/media/media.rdef b/src/prefs/media/media.rdef
index b20244d7a1..3724781298 100644
--- a/src/prefs/media/media.rdef
+++ b/src/prefs/media/media.rdef
@@ -57,7 +57,7 @@ resource mini_icon
 
 resource file_types message;
 
-resource app_signature "application/x-vnd.OBOS.Media";
+resource app_signature "application/x-vnd.haiku.Media";
 
 resource app_version
 {