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-rw-r--r--ext/session/mod_files.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/ext/session/mod_files.c b/ext/session/mod_files.c
index 89b894d29b..82727d3da1 100644
--- a/ext/session/mod_files.c
+++ b/ext/session/mod_files.c
@@ -39,6 +39,10 @@
#include <fcntl.h>
#include <errno.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
#include "php_session.h"
#include "mod_files.h"
#include "ext/standard/flock_compat.h"