diff --git a/api/20.txt b/api/20.txt
index 7964357..cb045c5 100644
--- a/api/20.txt
+++ b/api/20.txt
@@ -11639,7 +11639,6 @@
   }
 
   public class AudioFormat {
-    ctor public AudioFormat();
     field public static final deprecated int CHANNEL_CONFIGURATION_DEFAULT = 1; // 0x1
     field public static final deprecated int CHANNEL_CONFIGURATION_INVALID = 0; // 0x0
     field public static final deprecated int CHANNEL_CONFIGURATION_MONO = 2; // 0x2