diff --git a/Adafruit_MQTT.h b/Adafruit_MQTT.h
index b440b42..6e0e132 100644
--- a/Adafruit_MQTT.h
+++ b/Adafruit_MQTT.h
@@ -131,7 +131,7 @@
 #define SUBSCRIPTIONDATALEN 20
 #else
 #define MAXSUBSCRIPTIONS 15
-#define SUBSCRIPTIONDATALEN 100
+#define SUBSCRIPTIONDATALEN MAXBUFFERSIZE
 #endif
 
 class AdafruitIO_MQTT; // forward decl