diff --git a/TSRM/tsrm_virtual_cwd.c b/TSRM/tsrm_virtual_cwd.c
index edbb9d8b07e..1617ad68c10 100644
--- a/TSRM/tsrm_virtual_cwd.c
+++ b/TSRM/tsrm_virtual_cwd.c
@@ -503,6 +503,7 @@ static inline realpath_cache_bucket* realpath_cache_find(const char *path, int p
 }
 /* }}} */
 
+#undef LINK_MAX
 #define LINK_MAX 32
 
 static int tsrm_realpath_r(char *path, int start, int len, int *ll, time_t *t, int use_realpath, int is_dir, int *link_is_dir TSRMLS_DC) /* {{{ */