diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index aeb19e68e0860..11a2aa2a56c4c 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -258,7 +258,7 @@ int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id,
 	return rc;
 }
 
-int pstore_fill_super(struct super_block *sb, void *data, int silent)
+static int pstore_fill_super(struct super_block *sb, void *data, int silent)
 {
 	struct inode *inode;