diff --git a/dnn/dump_data.c b/dnn/dump_data.c
index fbf5b04e0..be1ff16ec 100644
--- a/dnn/dump_data.c
+++ b/dnn/dump_data.c
@@ -101,7 +101,6 @@ void write_audio(LPCNetEncState *st, const opus_int16 *pcm, const int *noise, FI
 
     OPUS_MOVE(&st->sig_mem[1], &st->sig_mem[0], LPC_ORDER-1);
     st->sig_mem[0] = p + ulaw2lin(e);
-    st->exc_mem = e;
   }
   fwrite(data, 4*FRAME_SIZE, 1, file);
 }
diff --git a/dnn/lpcnet_enc.c b/dnn/lpcnet_enc.c
index 809a18323..6a4674eb2 100644
--- a/dnn/lpcnet_enc.c
+++ b/dnn/lpcnet_enc.c
@@ -50,7 +50,6 @@ int lpcnet_encoder_get_size() {
 
 int lpcnet_encoder_init(LPCNetEncState *st) {
   memset(st, 0, sizeof(*st));
-  st->exc_mem = lin2ulaw(0.f);
   pitchdnn_init(&st->pitchdnn);
   return 0;
 }
diff --git a/dnn/lpcnet_plc.c b/dnn/lpcnet_plc.c
index 9dcd6c3fc..940e16035 100644
--- a/dnn/lpcnet_plc.c
+++ b/dnn/lpcnet_plc.c
@@ -132,10 +132,6 @@ static void queue_features(LPCNetPLCState *st, const float *features) {
   OPUS_COPY(&st->cont_features[(CONT_VECTORS-1)*NB_FEATURES], features, NB_FEATURES);
 }
 
-static void replace_features(LPCNetPLCState *st, const float *features) {
-  OPUS_COPY(&st->cont_features[(CONT_VECTORS-1)*NB_FEATURES], features, NB_FEATURES);
-}
-
 /* In this causal version of the code, the DNN model implemented by compute_plc_pred()
    needs to generate two feature vectors to conceal the first lost packet.*/
 
diff --git a/dnn/lpcnet_private.h b/dnn/lpcnet_private.h
index 381647ae1..4f328ad22 100644
--- a/dnn/lpcnet_private.h
+++ b/dnn/lpcnet_private.h
@@ -36,13 +36,9 @@ struct LPCNetEncState{
   float exc_buf[PITCH_BUF_SIZE];
   float lp_buf[PITCH_BUF_SIZE];
   float lp_mem[4];
-  float last_gain;
-  int last_period;
   float lpc[LPC_ORDER];
-  float vq_mem[NB_BANDS];
   float features[NB_TOTAL_FEATURES];
   float sig_mem[LPC_ORDER];
-  int exc_mem;
   float burg_cepstrum[2*NB_BANDS];
 };