diff --git a/deps/ftplib-4.0-1/src/ftplib.c b/deps/ftplib-4.0-1/src/ftplib.c
index b05a953..c5f35f2 100644
--- a/deps/ftplib-4.0-1/src/ftplib.c
+++ b/deps/ftplib-4.0-1/src/ftplib.c
@@ -44,7 +44,7 @@
 #elif defined(_WIN32)
 #include <winsock.h>
 #endif
-#if defined(__APPLE__)
+#if defined(__APPLE__) || defined(__sun)
 #undef _REENTRANT
 #endif