diff --git a/dave/bot.mjs b/dave/bot.mjs
index ad9c3d8..1904591 100644
--- a/dave/bot.mjs
+++ b/dave/bot.mjs
@@ -205,7 +205,13 @@ async function joinChannel(guildId, channelId) {
   const guild = await client.guilds.fetch(guildId).catch(() => null);
   const channel = guild && await guild.channels.fetch(channelId).catch(() => null);
   if (!channel || !channel.isVoiceBased()) { log(`join failed: ${guildId}/${channelId} not a voice channel`); return; }
-  if (currentGuildId && currentGuildId !== guildId) leaveChannel();
+  if (currentGuildId === guildId && currentChannelId === channelId && getVoiceConnection(guildId)) {
+    log(`already in "${channel.name}"`); return;
+  }
+  // Always tear down any existing connection first. Re-subscribing a player and
+  // receiver onto a reused same-guild connection would stack duplicate speaking
+  // listeners (→ duplicate voice turns) and duplicate error handlers.
+  if (currentGuildId) leaveChannel();
   const connection = joinVoiceChannel({
     channelId, guildId, adapterCreator: guild.voiceAdapterCreator,
     selfDeaf: false, selfMute: false,