diff --git a/Tethering/Android.bp b/Tethering/Android.bp
index 83a4ebc..0957526 100644
--- a/Tethering/Android.bp
+++ b/Tethering/Android.bp
@@ -66,6 +66,9 @@
         "liblog",
         "libnativehelper_compat_libc++",
     ],
+    static_libs: [
+        "libnetjniutils",
+    ],
 
     // We cannot use plain "libc++" here to link libc++ dynamically because it results in:
     //   java.lang.UnsatisfiedLinkError: dlopen failed: library "libc++_shared.so" not found
diff --git a/Tethering/jni/android_net_util_TetheringUtils.cpp b/Tethering/jni/android_net_util_TetheringUtils.cpp
index 60dacd4..7bfb6da 100644
--- a/Tethering/jni/android_net_util_TetheringUtils.cpp
+++ b/Tethering/jni/android_net_util_TetheringUtils.cpp
@@ -20,6 +20,7 @@
 #include <linux/filter.h>
 #include <nativehelper/JNIHelp.h>
 #include <nativehelper/ScopedUtfChars.h>
+#include <netjniutils/netjniutils.h>
 #include <net/if.h>
 #include <netinet/ether.h>
 #include <netinet/ip6.h>
@@ -56,7 +57,7 @@
         filter_code,
     };
 
-    int fd = jniGetFDFromFileDescriptor(env, javaFd);
+    int fd = netjniutils::GetNativeFileDescriptor(env, javaFd);
     if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) {
         jniThrowExceptionFmt(env, "java/net/SocketException",
                 "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno));
@@ -78,7 +79,7 @@
 {
     static const int kLinkLocalHopLimit = 255;
 
-    int fd = jniGetFDFromFileDescriptor(env, javaFd);
+    int fd = netjniutils::GetNativeFileDescriptor(env, javaFd);
 
     // Set an ICMPv6 filter that only passes Router Solicitations.
     struct icmp6_filter rs_only;