diff --git a/talk/build/common.gypi b/talk/build/common.gypi
index 093933cdc0..bd42465149 100644
--- a/talk/build/common.gypi
+++ b/talk/build/common.gypi
@@ -133,7 +133,6 @@
         },
         'defines': [
           'HASH_NAMESPACE=__gnu_cxx',
-          'POSIX',
           'WEBRTC_POSIX',
           'DISABLE_DYNAMIC_CAST',
           # The POSIX standard says we have to define this.
diff --git a/talk/examples/peerconnection/client/peer_connection_client.cc b/talk/examples/peerconnection/client/peer_connection_client.cc
index 1c4415d7a7..85e5b56425 100644
--- a/talk/examples/peerconnection/client/peer_connection_client.cc
+++ b/talk/examples/peerconnection/client/peer_connection_client.cc
@@ -51,7 +51,7 @@ rtc::AsyncSocket* CreateClientSocket(int family) {
   rtc::Win32Socket* sock = new rtc::Win32Socket();
   sock->CreateT(family, SOCK_STREAM);
   return sock;
-#elif defined(POSIX)
+#elif defined(WEBRTC_POSIX)
   rtc::Thread* thread = rtc::Thread::Current();
   ASSERT(thread != NULL);
   return thread->socketserver()->CreateAsyncSocket(family, SOCK_STREAM);
diff --git a/talk/examples/peerconnection/server/data_socket.cc b/talk/examples/peerconnection/server/data_socket.cc
index 44305bcbf7..03527418f3 100644
--- a/talk/examples/peerconnection/server/data_socket.cc
+++ b/talk/examples/peerconnection/server/data_socket.cc
@@ -31,7 +31,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#if defined(POSIX)
+#if defined(WEBRTC_POSIX)
 #include <unistd.h>
 #endif
 
diff --git a/talk/examples/stunserver/stunserver_main.cc b/talk/examples/stunserver/stunserver_main.cc
index 8b16a377c8..25cca16e28 100644
--- a/talk/examples/stunserver/stunserver_main.cc
+++ b/talk/examples/stunserver/stunserver_main.cc
@@ -25,9 +25,9 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifdef POSIX
+#if defined(WEBRTC_POSIX)
 #include <errno.h>
-#endif  // POSIX
+#endif  // WEBRTC_POSIX
 
 #include <iostream>
 
diff --git a/webrtc/libjingle/examples/call/console.cc b/webrtc/libjingle/examples/call/console.cc
index a0da2af9e4..0dfdd4b3ac 100644
--- a/webrtc/libjingle/examples/call/console.cc
+++ b/webrtc/libjingle/examples/call/console.cc
@@ -29,11 +29,11 @@
 
 #include <assert.h>
 
-#ifdef POSIX
+#if defined(WEBRTC_POSIX)
 #include <signal.h>
 #include <termios.h>
 #include <unistd.h>
-#endif  // POSIX
+#endif  // WEBRTC_POSIX
 
 #include "talk/examples/call/callclient.h"
 #include "talk/examples/call/console.h"
@@ -41,7 +41,7 @@
 #include "webrtc/base/messagequeue.h"
 #include "webrtc/base/stringutils.h"
 
-#ifdef POSIX
+#ifdef WEBRTC_POSIX
 static void DoNothing(int unused) {}
 #endif
 
@@ -147,7 +147,7 @@ void Console::RunConsole() {
 void Console::OnMessage(rtc::Message *msg) {
   switch (msg->message_id) {
     case MSG_START:
-#ifdef POSIX
+#if defined(WEBRTC_POSIX)
       // Install a no-op signal so that we can abort RunConsole() by raising
       // SIGUSR1.
       struct sigaction act;