diff --git a/boot/zephyr/Kconfig b/boot/zephyr/Kconfig
index 0bbdff3568..8ed9c2e8a3 100644
--- a/boot/zephyr/Kconfig
+++ b/boot/zephyr/Kconfig
@@ -1575,4 +1575,7 @@ config NCS_MCUBOOT_MANUFACTURING_APP_KEY_IDENTIFIER
 	help
 	  Manufacturing application key identifier.
 
+configdefault PSA_CRYPTO
+	  default y if SOC_NRF54H20 && BOOT_SIGNATURE_TYPE_ED25519
+
 source "Kconfig.zephyr"