diff --git a/transmit_disfection_protocol.hpp b/transmit_disfection_protocol.hpp
index ccdb100..2e7884a 100644
--- a/transmit_disfection_protocol.hpp
+++ b/transmit_disfection_protocol.hpp
@@ -300,6 +300,7 @@ typedef struct {
   uint16_t humid;         // %RH * 10
   uint16_t temp;          // °C * 10
   uint16_t saturation;    // %RS * 10
+  uint16_t h2o2adc;    // adc_val
 } report_h2o2_data_t;
 
 typedef struct {