1 files changed, 4 insertions, 0 deletions
diff --git a/include/db.h b/include/db.h
index 13e9c307eb..64c7348ea6 100644
--- a/include/db.h
+++ b/include/db.h
@@ -1,5 +1,9 @@
+#ifndef _DB_H_
+
 #include <db2/db.h>
 
 /* Internal interface for NSS.  */
 int __nss_db_open __P((const char *,
 		       DBTYPE, u_int32_t, int, DB_ENV *, DB_INFO *, DB **));
+
+#endif