diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_lproc.c b/drivers/staging/lustre/lustre/ptlrpc/sec_lproc.c
index 1213621ca5aa..1928bf57222f 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_lproc.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_lproc.c
@@ -55,7 +55,7 @@
 struct proc_dir_entry *sptlrpc_proc_root = NULL;
 EXPORT_SYMBOL(sptlrpc_proc_root);
 
-char *sec_flags2str(unsigned long flags, char *buf, int bufsize)
+static char *sec_flags2str(unsigned long flags, char *buf, int bufsize)
 {
 	buf[0] = '\0';