diff --git a/Adafruit_MQTT.cpp b/Adafruit_MQTT.cpp
index f895b58..fa93676 100644
--- a/Adafruit_MQTT.cpp
+++ b/Adafruit_MQTT.cpp
@@ -21,7 +21,7 @@
 // SOFTWARE.
 #include "Adafruit_MQTT.h"
 
-#if defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKR1000) ||             \
+#if defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKR1000) || defined(ARDUINO_SAMD_MKR1010) ||             \
     defined(ARDUINO_ARCH_SAMD)
 static char *dtostrf(double val, signed char width, unsigned char prec,
                      char *sout) {