diff --git a/firmware/AVR-Source/Pyr0_Piezo_Sensor_v2.x.x/src/pP_config.h b/firmware/AVR-Source/Pyr0_Piezo_Sensor_v2.x.x/src/pP_config.h
index 07f5b21..ed535cb 100644
--- a/firmware/AVR-Source/Pyr0_Piezo_Sensor_v2.x.x/src/pP_config.h
+++ b/firmware/AVR-Source/Pyr0_Piezo_Sensor_v2.x.x/src/pP_config.h
@@ -43,7 +43,7 @@ extern int PZDET; // Enable or disable piezo connection detection, default is of
 
 #define VCCSW_DEFAULT 0
 #define VCCSW_ADDRESS 28
-extern int VCCSW; // Enable or disable piezo connection detection, default is off
+extern int VCCSW; // Set the signal output to 3.3v [0] or 5v logic [1]
 
 extern int Debug;