diff --git a/firmware/hw_layer/ports/stm32/stm32f4/cfg/chconf.h b/firmware/hw_layer/ports/stm32/stm32f4/cfg/chconf.h
index ecdf2293d3..aec61a843f 100644
--- a/firmware/hw_layer/ports/stm32/stm32f4/cfg/chconf.h
+++ b/firmware/hw_layer/ports/stm32/stm32f4/cfg/chconf.h
@@ -750,6 +750,12 @@
 /* Port-specific settings (override port settings defaulted in chcore.h).    */
 /*===========================================================================*/
 
+/**
+ * @brief   Sleep at idle.
+ * @details This option enables call to __WFI() from idle thread to save power.
+ */
+#define CORTEX_ENABLE_WFI_IDLE TRUE
+
 #endif  /* CHCONF_H */
 
 /** @} */
diff --git a/firmware/hw_layer/ports/stm32/stm32f7/cfg/chconf.h b/firmware/hw_layer/ports/stm32/stm32f7/cfg/chconf.h
index dfe7360ac6..b554f671f5 100644
--- a/firmware/hw_layer/ports/stm32/stm32f7/cfg/chconf.h
+++ b/firmware/hw_layer/ports/stm32/stm32f7/cfg/chconf.h
@@ -752,6 +752,12 @@
 
 #define CORTEX_VTOR_INIT                    0x00200000U
 
+/**
+ * @brief   Sleep at idle.
+ * @details This option enables call to __WFI() from idle thread to save power.
+ */
+#define CORTEX_ENABLE_WFI_IDLE TRUE
+
 #endif  /* CHCONF_H */
 
 /** @} */
diff --git a/firmware/hw_layer/ports/stm32/stm32h7/cfg/chconf.h b/firmware/hw_layer/ports/stm32/stm32h7/cfg/chconf.h
index 6912341719..3ab100d152 100644
--- a/firmware/hw_layer/ports/stm32/stm32h7/cfg/chconf.h
+++ b/firmware/hw_layer/ports/stm32/stm32h7/cfg/chconf.h
@@ -713,6 +713,12 @@
 /* Port-specific settings (override port settings defaulted in chcore.h).    */
 /*===========================================================================*/
 
+/**
+ * @brief   Sleep at idle.
+ * @details This option enables call to __WFI() from idle thread to save power.
+ */
+#define CORTEX_ENABLE_WFI_IDLE TRUE
+
 #endif  /* CHCONF_H */
 
 /** @} */