diff --git a/packages/initramfs/sysutils/busybox-initramfs/config/busybox-initramfs.conf b/packages/initramfs/sysutils/busybox-initramfs/config/busybox-initramfs.conf
index 05322796d6..8f59686f18 100644
--- a/packages/initramfs/sysutils/busybox-initramfs/config/busybox-initramfs.conf
+++ b/packages/initramfs/sysutils/busybox-initramfs/config/busybox-initramfs.conf
@@ -997,7 +997,7 @@ CONFIG_FEATURE_BASH_IS_ASH=y
 # CONFIG_FEATURE_BASH_IS_HUSH is not set
 # CONFIG_FEATURE_BASH_IS_NONE is not set
 CONFIG_SH_MATH_SUPPORT=y
-# CONFIG_SH_MATH_SUPPORT_64 is not set
+CONFIG_SH_MATH_SUPPORT_64=y
 CONFIG_FEATURE_SH_EXTRA_QUIET=y
 CONFIG_FEATURE_SH_STANDALONE=y
 # CONFIG_FEATURE_SH_NOFORK is not set