diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig
index ea66cbf15da5..eb109fe6f7d0 100644
--- a/drivers/iio/dac/Kconfig
+++ b/drivers/iio/dac/Kconfig
@@ -436,6 +436,7 @@ 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"