diff --git a/target/linux/kirkwood/config-5.15 b/target/linux/kirkwood/config-5.15
index 409010b957..b962b17e86 100644
--- a/target/linux/kirkwood/config-5.15
+++ b/target/linux/kirkwood/config-5.15
@@ -21,6 +21,7 @@ CONFIG_ARM=y
 CONFIG_ARM_APPENDED_DTB=y
 CONFIG_ARM_ATAG_DTB_COMPAT=y
 CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y
+CONFIG_ARM_CRYPTO=y
 CONFIG_ARM_HAS_SG_CHAIN=y
 # CONFIG_ARM_KIRKWOOD_CPUIDLE is not set
 CONFIG_ARM_L1_CACHE_SHIFT=5