diff --git a/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php b/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
index 1a8ac7797215..0f8f7584a154 100644
--- a/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
+++ b/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
@@ -101,6 +101,10 @@ public function validAuthenticationResponse($request, $result)
      */
     public function broadcast(array $channels, $event, array $payload = [])
     {
+        if (empty($channels)) {
+            return;
+        }
+
         $connection = $this->redis->connection($this->connection);
 
         $payload = json_encode([
@@ -109,8 +113,23 @@ public function broadcast(array $channels, $event, array $payload = [])
             'socket' => Arr::pull($payload, 'socket'),
         ]);
 
-        foreach ($this->formatChannels($channels) as $channel) {
-            $connection->publish($channel, $payload);
-        }
+        $connection->eval($this->broadcastMultipleChannelsScript(), 0, $payload, ...$this->formatChannels($channels));
+    }
+
+    /**
+     * Get the Lua script for broadcasting to multiple channels.
+     *
+     * ARGV[1] - The payload
+     * ARGV[2...] - The channels
+     *
+     * @return string
+     */
+    protected function broadcastMultipleChannelsScript()
+    {
+        return <<<'LUA'
+for i = 2, #ARGV do
+  redis.call('publish', ARGV[i], ARGV[1])
+end
+LUA;
     }
 }