initialize silence_size to zero
diff --git a/utils/tinyplay.c b/utils/tinyplay.c
index 20dd7e8..8b01a1d 100644
--- a/utils/tinyplay.c
+++ b/utils/tinyplay.c
@@ -59,6 +59,7 @@
     cmd->config.rate = 48000;
     cmd->config.format = PCM_FORMAT_S16_LE;
     cmd->config.silence_threshold = 1024 * 2;
+    cmd->config.silence_size = 0;
     cmd->config.stop_threshold = 1024 * 2;
     cmd->config.start_threshold = 1024;
     cmd->bits = 16;