diff --git a/drivers/i2c/stm32f7_i2c.c b/drivers/i2c/stm32f7_i2c.c
index 3872364..e7e0268 100644
--- a/drivers/i2c/stm32f7_i2c.c
+++ b/drivers/i2c/stm32f7_i2c.c
@@ -500,7 +500,7 @@
 	af_delay_max = setup->analog_filter ?
 		       STM32_I2C_ANALOG_FILTER_DELAY_MAX : 0;
 
-	sdadel_min = setup->fall_time - i2c_specs[setup->speed].hddat_min -
+	sdadel_min = i2c_specs[setup->speed].hddat_min + setup->fall_time -
 		     af_delay_min - (setup->dnf + 3) * i2cclk;
 
 	sdadel_max = i2c_specs[setup->speed].vddat_max - setup->rise_time -