diff --git a/Adafruit_MQTT.cpp b/Adafruit_MQTT.cpp
index 85f91d8..eaaff81 100644
--- a/Adafruit_MQTT.cpp
+++ b/Adafruit_MQTT.cpp
@@ -240,7 +240,8 @@ void Adafruit_MQTT::processSubscriptionPacket(Adafruit_MQTT_Subscribe *sub) {
     // execute callback in io mode
     ((sub->io_mqtt)->*(sub->callback_io))((char *)sub->lastread, sub->datalen);
   } else {
-    DEBUG_PRINTLN("ERROR: Subscription packet did not have an associated callback");
+    DEBUG_PRINTLN(
+        "ERROR: Subscription packet did not have an associated callback");
     return;
   }
   // mark subscription message as "read""