diff --git a/mobile/src/main/jni/shadowsocks-libev b/mobile/src/main/jni/shadowsocks-libev
index 19e222ba..1c2b6170 160000
--- a/mobile/src/main/jni/shadowsocks-libev
+++ b/mobile/src/main/jni/shadowsocks-libev
@@ -1 +1 @@
-Subproject commit 19e222bad8416f20b7694bff75f2cee72a70701e
+Subproject commit 1c2b6170b9ec5443d4a3e211425bc0d5f8e18119
diff --git a/mobile/src/main/scala/com/github/shadowsocks/utils/TcpFastOpen.scala b/mobile/src/main/scala/com/github/shadowsocks/utils/TcpFastOpen.scala
index 80108f26..033fc03d 100644
--- a/mobile/src/main/scala/com/github/shadowsocks/utils/TcpFastOpen.scala
+++ b/mobile/src/main/scala/com/github/shadowsocks/utils/TcpFastOpen.scala
@@ -46,7 +46,7 @@ object TcpFastOpen {
 
   def sendEnabled: Boolean = {
     val file = new File("/proc/sys/net/ipv4/tcp_fastopen")
-    file.canRead && (Source.fromFile(file).mkString.toInt & 1) > 0
+    file.canRead && (Source.fromFile(file).mkString.trim.toInt & 1) > 0
   }
 
   def enabled(value: Boolean): String = if (sendEnabled != value) {