diff --git a/src/output/wav.c b/src/output/wav.c
index 87ac44ac..f991cbfd 100644
--- a/src/output/wav.c
+++ b/src/output/wav.c
@@ -315,7 +315,7 @@ static int receive(const struct sr_output *o, const struct sr_datafeed_packet *p
 			for (j = 0; j < num_channels; j++) {
 				idx = chan_idx[j];
 				buf = outc->chanbuf[idx] + outc->chanbuf_used[idx]++ * 4;
-				f = analog_old->data[i * num_channels + j];
+				f = data[i * num_channels + j];
 				if (outc->scale != 0.0)
 					f /= outc->scale;
 				float_to_le(buf, f);