diff --git a/libavcodec/amr.c b/libavcodec/amr.c
index 4e1e69c03a7c8dfe445f7e5a169cf201b11ffb92..18c06c2d9a36a846f22fd93fba56a6bb9c2e40ae 100644
--- a/libavcodec/amr.c
+++ b/libavcodec/amr.c
@@ -309,7 +309,6 @@ static int amr_nb_decode_frame(AVCodecContext * avctx,
 
         //Each AMR-frame results in 160 16-bit samples
         *data_size+=160*2;
-        synth+=160;
 
         /* if not homed: check whether current frame is a homing frame */
         if (s->reset_flag_old == 0)