diff --git a/drivers/staging/lustre/lustre/include/lustre_sec.h b/drivers/staging/lustre/lustre/include/lustre_sec.h
index 1d2c5724d1df45bb847d57c0a23ca4342a5642ba..96a717e254121318bc6bca5c4a91aeb110a3b9a6 100644
--- a/drivers/staging/lustre/lustre/include/lustre_sec.h
+++ b/drivers/staging/lustre/lustre/include/lustre_sec.h
@@ -331,8 +331,6 @@ static inline void sptlrpc_rule_set_init(struct sptlrpc_rule_set *set)
 
 void sptlrpc_rule_set_free(struct sptlrpc_rule_set *set);
 int  sptlrpc_rule_set_expand(struct sptlrpc_rule_set *set);
-int  sptlrpc_rule_set_merge(struct sptlrpc_rule_set *set,
-			    struct sptlrpc_rule *rule);
 int sptlrpc_rule_set_choose(struct sptlrpc_rule_set *rset,
 			    enum lustre_sec_part from,
 			    enum lustre_sec_part to,
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_config.c b/drivers/staging/lustre/lustre/ptlrpc/sec_config.c
index 0d29b8734a531314b8fcfb88bfb89f07780f2a7c..6fb5b4c409d1c8d898e5282bb902b8862cb67660 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_config.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_config.c
@@ -285,8 +285,8 @@ static inline int rule_match_net(struct sptlrpc_rule *r1,
  * merge @rule into @rset.
  * the @rset slots might be expanded.
  */
-int sptlrpc_rule_set_merge(struct sptlrpc_rule_set *rset,
-			   struct sptlrpc_rule *rule)
+static int sptlrpc_rule_set_merge(struct sptlrpc_rule_set *rset,
+				  struct sptlrpc_rule *rule)
 {
 	struct sptlrpc_rule *p = rset->srs_rules;
 	int spec_dir, spec_net;
@@ -370,8 +370,6 @@ int sptlrpc_rule_set_merge(struct sptlrpc_rule_set *rset,
 
 	return 0;
 }
-EXPORT_SYMBOL(sptlrpc_rule_set_merge);
-
 /**
  * given from/to/nid, determine a matching flavor in ruleset.
  * return 1 if a match found, otherwise return 0.