diff --git a/src/lib/net/buffers_net.c b/src/lib/net/buffers_net.c
index 576dc56a52..a4c0aca3b5 100644
--- a/src/lib/net/buffers_net.c
+++ b/src/lib/net/buffers_net.c
@@ -21,7 +21,10 @@
 #endif
 
 #include <stdlib.h>
+
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
 
 #ifdef PARANOIA
 /** Helper: If PARANOIA is defined, assert that the buffer in local variable