diff --git a/C/src/xplaneConnect.c b/C/src/xplaneConnect.c
index 0c59442..d1a041f 100755
--- a/C/src/xplaneConnect.c
+++ b/C/src/xplaneConnect.c
@@ -113,8 +113,8 @@ XPCSocket openUDP(const char *xpIP, unsigned short xpPort, unsigned short port)
 	DWORD timeout = 1; // Minimum socket timeout in Windows is 1ms
 #else
 	struct timeval timeout;
-	tv.tv_sec = 0;
-	tv.tv_usec = 500;
+	timeout.tv_sec = 0;
+	timeout.tv_usec = 500;
 #endif
 	if (setsockopt(sock.sock, SOL_SOCKET, SO_RCVTIMEO, (char*)&timeout, sizeof(timeout)) < 0)
 	{
@@ -200,7 +200,7 @@ int readUDP(XPCSocket sock, char buffer[], int len)
 	status = recv(sock.sock, buffer, len, 0);
 #else
 	// For apple or linux-just read - will timeout in 0.5 ms
-	status = (int)recv(sock.sock, dataRef, len, 0);
+	int status = (int)recv(sock.sock, buffer, len, 0);
 #endif
 	if (status < 0)
 	{
diff --git a/xpcPlugin/Drawing.cpp b/xpcPlugin/Drawing.cpp
index a493f79..3b26c13 100644
--- a/xpcPlugin/Drawing.cpp
+++ b/xpcPlugin/Drawing.cpp
@@ -27,7 +27,11 @@
 #if IBM
 #include <windows.h>
 #endif
-#include <GL/gl.h>
+#ifdef __APPLE__
+#  include <OpenGL/gl.h>
+#else
+#  include <GL/gl.h>
+#endif/*__APPLE__*/
 
 namespace XPC
 {