diff --git a/boards/cc2538dk/Kconfig b/boards/cc2538dk/Kconfig
index 47c70726be..0bf24db89f 100644
--- a/boards/cc2538dk/Kconfig
+++ b/boards/cc2538dk/Kconfig
@@ -13,6 +13,7 @@ config BOARD_CC2538DK
     select CPU_MODEL_CC2538NF53
     select HAS_PERIPH_ADC
     select HAS_PERIPH_I2C
+    select HAS_PERIPH_RTT
     select HAS_PERIPH_SPI
     select HAS_PERIPH_TIMER
     select HAS_PERIPH_UART
diff --git a/boards/cc2538dk/Makefile.features b/boards/cc2538dk/Makefile.features
index 2af2bbc48d..db53ca13e3 100644
--- a/boards/cc2538dk/Makefile.features
+++ b/boards/cc2538dk/Makefile.features
@@ -4,6 +4,7 @@ CPU_MODEL ?= cc2538nf53
 # Put defined MCU peripherals here (in alphabetical order)
 FEATURES_PROVIDED += periph_adc
 FEATURES_PROVIDED += periph_i2c
+FEATURES_PROVIDED += periph_rtt
 FEATURES_PROVIDED += periph_spi
 FEATURES_PROVIDED += periph_timer
 FEATURES_PROVIDED += periph_uart