diff --git a/include/payload.h b/include/payload.h
index 7ddbe1af..bf6a4577 100644
--- a/include/payload.h
+++ b/include/payload.h
@@ -1,6 +1,7 @@
 #ifndef _PAYLOAD_H_
 #define _PAYLOAD_H_
 
+#include "sensor.h"
 #include "sds011read.h"
 
 // MyDevices CayenneLPP 1.0 channels for Synamic sensor payload format