diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig
index 69f4cfa6494b..8a27d105cc06 100644
--- a/drivers/iio/dac/Kconfig
+++ b/drivers/iio/dac/Kconfig
@@ -335,6 +335,7 @@ config STM32_DAC
 
 config STM32_DAC_CORE
 	tristate
+	select REGMAP_MMIO
 
 config TI_DAC082S085
 	tristate "Texas Instruments 8/10/12-bit 2/4-channel DAC driver"