diff --git a/src/Platform.h b/src/Platform.h
index f579a36..e12395e 100644
--- a/src/Platform.h
+++ b/src/Platform.h
@@ -32,6 +32,7 @@
 #include <coreinit/thread.h>
 #include <coreinit/fastmutex.h>
 #include <coreinit/fastcondition.h>
+#include <fcntl.h>
 #else
 #include <unistd.h>
 #include <pthread.h>
@@ -39,6 +40,7 @@
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
 #include <netinet/in.h>
+#include <fcntl.h>
 #endif
 
 #ifdef _WIN32
diff --git a/src/PlatformSockets.c b/src/PlatformSockets.c
index 01c0c10..7820e90 100644
--- a/src/PlatformSockets.c
+++ b/src/PlatformSockets.c
@@ -299,11 +299,13 @@ int setSocketNonBlocking(SOCKET s, bool enabled) {
 #if defined(__vita__)
     int val = enabled ? 1 : 0;
     return setsockopt(s, SOL_SOCKET, SO_NONBLOCK, (char*)&val, sizeof(val));
+#elif defined(O_NONBLOCK)
+    return fcntl(s, F_SETFL, (enabled ? O_NONBLOCK : 0) | (fcntl(s, F_GETFL) & ~O_NONBLOCK));
 #elif defined(FIONBIO)
     int val = enabled ? 1 : 0;
     return ioctlsocket(s, FIONBIO, &val);
 #else
-    return SOCKET_ERROR;
+#error Please define your platform's non-blocking sockets API!
 #endif
 }