diff --git a/lib/cpp/src/thrift/protocol/TProtocol.h b/lib/cpp/src/thrift/protocol/TProtocol.h
index eb323b0..5d44043 100644
--- a/lib/cpp/src/thrift/protocol/TProtocol.h
+++ b/lib/cpp/src/thrift/protocol/TProtocol.h
@@ -127,7 +127,7 @@
 # elif defined(_MSC_VER) /* Microsoft Visual C++ */
 #  define ntohll(n) ( _byteswap_uint64((uint64_t)n) )
 #  define htonll(n) ( _byteswap_uint64((uint64_t)n) )
-# else /* Not GNUC/GLIBC or MSVC */
+# elif !defined(ntohll) /* Not GNUC/GLIBC or MSVC */
 #  define ntohll(n) ( (((uint64_t)ntohl((uint32_t)n)) << 32) + ntohl((uint32_t)(n >> 32)) )
 #  define htonll(n) ( (((uint64_t)htonl((uint32_t)n)) << 32) + htonl((uint32_t)(n >> 32)) )
 # endif /* GNUC/GLIBC or MSVC or something else */