diff --git a/vp9/encoder/vp9_encoder.h b/vp9/encoder/vp9_encoder.h
index 1ba763414fa5276b61861a40d8e515a32864e0a8..c69a345d0ebb5f8c089081fb97230ca7020bfc02 100644
--- a/vp9/encoder/vp9_encoder.h
+++ b/vp9/encoder/vp9_encoder.h
@@ -256,7 +256,6 @@ typedef struct VP9EncoderConfig {
 
   // these parameters aren't to be used in final build don't use!!!
   int play_alternate;
-  int alt_freq;
 
   int encode_breakout;  // early breakout : for video conf recommend 800