diff --git a/fs/fs_parser.c b/fs/fs_parser.c
index ab53e42a874a..68b0148f4bb8 100644
--- a/fs/fs_parser.c
+++ b/fs/fs_parser.c
@@ -189,7 +189,7 @@ int fs_lookup_param(struct fs_context *fc,
 }
 EXPORT_SYMBOL(fs_lookup_param);
 
-int fs_param_bad_value(struct p_log *log, struct fs_parameter *param)
+static int fs_param_bad_value(struct p_log *log, struct fs_parameter *param)
 {
 	return inval_plog(log, "Bad value for '%s'", param->key);
 }