diff --git a/src/os/unix/ngx_process.h b/src/os/unix/ngx_process.h
new file mode 100644
index 0000000..60689ba
--- /dev/null
+++ b/src/os/unix/ngx_process.h
@@ -0,0 +1,8 @@
+#ifndef _NGX_PROCESS_H_INCLUDED_
+#define _NGX_PROCESS_H_INCLUDED_
+
+
+#define ngx_getpid  getpid
+
+
+#endif /* _NGX_PROCESS_H_INCLUDED_ */