diff --git a/src/hardware/hantek-dso/api.c b/src/hardware/hantek-dso/api.c
index ba4918d5..b871ddaf 100644
--- a/src/hardware/hantek-dso/api.c
+++ b/src/hardware/hantek-dso/api.c
@@ -758,6 +758,7 @@ static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
 		}
 	}
 	sr_session_send(devc->cb_data, &packet);
+	g_free(analog.data);
 }
 
 /*