diff --git a/doc/source/firehose.rst b/doc/source/firehose.rst
index 719f653bfa..0c347b9ea4 100644
--- a/doc/source/firehose.rst
+++ b/doc/source/firehose.rst
@@ -143,7 +143,7 @@ on the firehose and print it to STDOUT
 
     def on_connect(client, userdata, flags, rc):
         print("Connected with result code " + str(rc))
-            client.subscribe('#')
+        client.subscribe('#')
 
     def on_message(client, userdata, msg):
         print(msg.topic+" "+str(msg.payload))