diff --git a/src/unix/internal.h b/src/unix/internal.h
index 402ee87..ab4f58c 100644
--- a/src/unix/internal.h
+++ b/src/unix/internal.h
@@ -62,9 +62,7 @@
 # include <AvailabilityMacros.h>
 #endif
 
-#if defined(_POSIX_PATH_MAX)
-# define UV__PATH_MAX _POSIX_PATH_MAX
-#elif defined(PATH_MAX)
+#if defined(PATH_MAX)
 # define UV__PATH_MAX PATH_MAX
 #else
 # define UV__PATH_MAX 8192