diff --git a/tinyxml2.cpp b/tinyxml2.cpp
index d803b14..77b5cc4 100755
--- a/tinyxml2.cpp
+++ b/tinyxml2.cpp
@@ -103,10 +103,10 @@ distribution.
 #if defined(_WIN64)
 	#define TIXML_FSEEK _fseeki64
 	#define TIXML_FTELL _ftelli64
-#elif defined(__APPLE__)
+#elif defined(__APPLE__) || (__FreeBSD__)
 	#define TIXML_FSEEK fseeko
 	#define TIXML_FTELL ftello
-#elif defined(__x86_64__)
+#elif defined(__unix__) && defined(__x86_64__)
 	#define TIXML_FSEEK fseeko64
 	#define TIXML_FTELL ftello64
 #else