diff --git a/examples/openthread/ot_sleepy_device/deep_sleep/main/CMakeLists.txt b/examples/openthread/ot_sleepy_device/deep_sleep/main/CMakeLists.txt
index e205eff4b8..0eae9c4991 100644
--- a/examples/openthread/ot_sleepy_device/deep_sleep/main/CMakeLists.txt
+++ b/examples/openthread/ot_sleepy_device/deep_sleep/main/CMakeLists.txt
@@ -1,3 +1,3 @@
 idf_component_register(SRCS "esp_ot_sleepy_device.c"
-                       PRIV_REQUIRES esp_event esp_timer openthread nvs_flash ulp
+                       PRIV_REQUIRES esp_event esp_timer openthread nvs_flash
                        INCLUDE_DIRS ".")
diff --git a/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults b/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults
index 18d548c09c..6c17f055c7 100644
--- a/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults
+++ b/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults
@@ -42,8 +42,6 @@ CONFIG_IEEE802154_ENABLED=y
 #
 # deep sleep
 #
-CONFIG_ULP_COPROC_ENABLED=y
-CONFIG_ULP_COPROC_RESERVE_MEM=512
 CONFIG_LIBC_TIME_SYSCALL_USE_RTC_HRT=y
 CONFIG_RTC_CLK_SRC_INT_RC=y
 CONFIG_BOOTLOADER_SKIP_VALIDATE_IN_DEEP_SLEEP=y