diff --git a/toolchain/uClibc/uClibc-0.9.30.config b/toolchain/uClibc/uClibc-0.9.30.config
index 30db7fe45e..c8efe18ecb 100644
--- a/toolchain/uClibc/uClibc-0.9.30.config
+++ b/toolchain/uClibc/uClibc-0.9.30.config
@@ -135,7 +135,7 @@ UCLIBC_USE_NETLINK=y
 # String and Stdio Support
 #
 # UCLIBC_HAS_STRING_GENERIC_OPT is not set
-# UCLIBC_HAS_STRING_ARCH_OPT is not set
+UCLIBC_HAS_STRING_ARCH_OPT=y
 UCLIBC_HAS_CTYPE_TABLES=y
 UCLIBC_HAS_CTYPE_SIGNED=y
 # UCLIBC_HAS_CTYPE_UNSAFE is not set