diff --git a/build-ndk.sh b/build-ndk.sh
index 9aba4cb2..90497984 100755
--- a/build-ndk.sh
+++ b/build-ndk.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 cd src/main
 ndk-build
-for app in ip6tables iptables obfsproxy pdnsd polipo redsocks shadowsocks tun2socks
+for app in iptables pdnsd redsocks shadowsocks tun2socks
 do
     mv libs/armeabi/$app assets/arm/
     mv libs/x86/$app assets/x86/
diff --git a/src/main/assets/arm/ip6tables b/src/main/assets/arm/ip6tables
deleted file mode 100755
index 263de078..00000000
Binary files a/src/main/assets/arm/ip6tables and /dev/null differ
diff --git a/src/main/assets/arm/obfsproxy b/src/main/assets/arm/obfsproxy
deleted file mode 100755
index f18c7eea..00000000
Binary files a/src/main/assets/arm/obfsproxy and /dev/null differ
diff --git a/src/main/assets/arm/polipo b/src/main/assets/arm/polipo
deleted file mode 100755
index 51604f06..00000000
Binary files a/src/main/assets/arm/polipo and /dev/null differ
diff --git a/src/main/assets/x86/ip6tables b/src/main/assets/x86/ip6tables
deleted file mode 100755
index de8acddd..00000000
Binary files a/src/main/assets/x86/ip6tables and /dev/null differ
diff --git a/src/main/assets/x86/obfsproxy b/src/main/assets/x86/obfsproxy
deleted file mode 100755
index 324881d1..00000000
Binary files a/src/main/assets/x86/obfsproxy and /dev/null differ
diff --git a/src/main/assets/x86/polipo b/src/main/assets/x86/polipo
deleted file mode 100755
index dac0a56c..00000000
Binary files a/src/main/assets/x86/polipo and /dev/null differ