diff --git a/src/drivers/px4flow/px4flow.cpp b/src/drivers/px4flow/px4flow.cpp
index 50089282ab..f214b5964f 100644
--- a/src/drivers/px4flow/px4flow.cpp
+++ b/src/drivers/px4flow/px4flow.cpp
@@ -74,7 +74,7 @@
 
 /* Configuration Constants */
 #define PX4FLOW_BUS 			PX4_I2C_BUS_EXPANSION
-#define I2C_FLOW_ADDRESS 		0x45 //* 7-bit address. 8-bit address is 0x8A
+#define I2C_FLOW_ADDRESS 		0x42 //* 7-bit address. 8-bit address is 0x84
 //range 0x42 - 0x49
 
 /* PX4FLOW Registers addresses */