diff --git a/testhal/STM32/I2C/lis3.c b/testhal/STM32/I2C/lis3.c
index 7e7c9d221..b07a51f13 100644
--- a/testhal/STM32/I2C/lis3.c
+++ b/testhal/STM32/I2C/lis3.c
@@ -35,7 +35,6 @@ static I2CSlaveConfig lis3 = {
   accel_rx_data,
   accel_tx_data,
   0b0011101,
-  7,
   0,
   0,
   {NULL},
diff --git a/testhal/STM32/I2C/max1236.c b/testhal/STM32/I2C/max1236.c
index 36a77ff03..f5f88bfc4 100644
--- a/testhal/STM32/I2C/max1236.c
+++ b/testhal/STM32/I2C/max1236.c
@@ -47,7 +47,6 @@ static I2CSlaveConfig max1236 = {
     max1236_rx_data,
     max1236_tx_data,
     0b0110100,
-    7,
     0,
     0,
     {NULL},
diff --git a/testhal/STM32/I2C/tmp75.c b/testhal/STM32/I2C/tmp75.c
index cc1b2ca7f..80aa352ee 100644
--- a/testhal/STM32/I2C/tmp75.c
+++ b/testhal/STM32/I2C/tmp75.c
@@ -42,7 +42,6 @@ static I2CSlaveConfig tmp75 = {
     tmp75_rx_data,
     tmp75_tx_data,
     0b1001000,
-    7,
     0,
     0,
     {NULL},