diff --git a/package/shadowsocks-libev/shadowsocks-libev.mk b/package/shadowsocks-libev/shadowsocks-libev.mk
index 7fdcd3f772..caae2176b4 100644
--- a/package/shadowsocks-libev/shadowsocks-libev.mk
+++ b/package/shadowsocks-libev/shadowsocks-libev.mk
@@ -14,11 +14,4 @@ SHADOWSOCKS_LIBEV_CONF_OPTS = \
 	--with-pcre=$(STAGING_DIR)/usr \
 	--disable-ssp
 
-# gcc on riscv doesn't define _REENTRANT when -pthread is passed while
-# it should. Compensate this deficiency here otherwise shadowsocks-libev
-# configure script doesn't find that thread support is enabled.
-ifeq ($(BR2_riscv),y)
-SHADOWSOCKS_LIBEV_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -D_REENTRANT"
-endif
-
 $(eval $(autotools-package))