diff --git a/meta/recipes-core/busybox/busybox-1.19.3/defconfig b/meta/recipes-core/busybox/busybox-1.19.3/defconfig
index 1990f28..ebd751d 100644
--- a/meta/recipes-core/busybox/busybox-1.19.3/defconfig
+++ b/meta/recipes-core/busybox/busybox-1.19.3/defconfig
@@ -214,7 +214,7 @@ CONFIG_FEATURE_ENV_LONG_OPTIONS=y
 # CONFIG_EXPAND is not set
 # CONFIG_FEATURE_EXPAND_LONG_OPTIONS is not set
 CONFIG_EXPR=y
-# CONFIG_EXPR_MATH_SUPPORT_64 is not set
+CONFIG_EXPR_MATH_SUPPORT_64=y
 CONFIG_FALSE=y
 # CONFIG_FOLD is not set
 # CONFIG_FSYNC is not set