diff --git a/flight/PiOS/Common/pios_bmp085.c b/flight/PiOS/Common/pios_bmp085.c
index aecf8ab37..2b829ba9d 100644
--- a/flight/PiOS/Common/pios_bmp085.c
+++ b/flight/PiOS/Common/pios_bmp085.c
@@ -204,12 +204,14 @@ bool PIOS_BMP085_Read(uint8_t address, uint8_t *buffer, uint8_t len)
 
   const struct pios_i2c_txn txn_list[] = {
     {
+      .info = __func__,
       .addr = BMP085_I2C_ADDR,
       .rw   = PIOS_I2C_TXN_WRITE,
       .len  = sizeof(addr_buffer),
       .buf  = addr_buffer,
     },
     {
+      .info = __func__,
       .addr = BMP085_I2C_ADDR,
       .rw   = PIOS_I2C_TXN_READ,
       .len  = len,
@@ -238,6 +240,7 @@ bool PIOS_BMP085_Write(uint8_t address, uint8_t buffer)
 
   const struct pios_i2c_txn txn_list[] = {
     {
+      .info = __func__,
       .addr = BMP085_I2C_ADDR,
       .rw   = PIOS_I2C_TXN_WRITE,
       .len  = sizeof(data),
diff --git a/flight/PiOS/Common/pios_hmc5843.c b/flight/PiOS/Common/pios_hmc5843.c
index a66adf8eb..3ce0d06b8 100644
--- a/flight/PiOS/Common/pios_hmc5843.c
+++ b/flight/PiOS/Common/pios_hmc5843.c
@@ -214,12 +214,14 @@ bool PIOS_HMC5843_Read(uint8_t address, uint8_t *buffer, uint8_t len)
 
   const struct pios_i2c_txn txn_list[] = {
     {
+      .info = __func__,
       .addr = PIOS_HMC5843_I2C_ADDR,
       .rw   = PIOS_I2C_TXN_WRITE,
       .len  = sizeof(addr_buffer),
       .buf  = addr_buffer,
     },
     {
+      .info = __func__,
       .addr = PIOS_HMC5843_I2C_ADDR,
       .rw   = PIOS_I2C_TXN_READ,
       .len  = len,
@@ -247,6 +249,7 @@ bool PIOS_HMC5843_Write(uint8_t address, uint8_t buffer)
 
   const struct pios_i2c_txn txn_list[] = {
     {
+      .info = __func__,
       .addr = PIOS_HMC5843_I2C_ADDR,
       .rw   = PIOS_I2C_TXN_WRITE,
       .len  = sizeof(data),
diff --git a/flight/PiOS/inc/pios_i2c.h b/flight/PiOS/inc/pios_i2c.h
index 51b3cdecc..f2109ef49 100644
--- a/flight/PiOS/inc/pios_i2c.h
+++ b/flight/PiOS/inc/pios_i2c.h
@@ -40,6 +40,7 @@ enum pios_i2c_txn_direction {
 };
 
 struct pios_i2c_txn {
+  const char                  * info;
   uint16_t                      addr;
   enum pios_i2c_txn_direction   rw;
   uint32_t                      len;