diff --git a/src/attr.c b/src/attr.c
index bd001eb..297fc2b 100644
--- a/src/attr.c
+++ b/src/attr.c
@@ -111,7 +111,7 @@ int attr_def_add(const char *name, const char *desc, struct unit *unit,
 	return def->ad_id;
 }
 
-void attr_def_free(struct attr_def *def)
+static void attr_def_free(struct attr_def *def)
 {
 	if (!def)
 		return;
diff --git a/src/element.c b/src/element.c
index f7c569b..d71a337 100644
--- a/src/element.c
+++ b/src/element.c
@@ -113,8 +113,9 @@ void element_parse_policy(const char *policy)
 	xfree(copy);
 }
 
-struct element *__lookup_element(struct element_group *group, const char *name,
-				 uint32_t id, struct element *parent)
+static struct element *__lookup_element(struct element_group *group,
+					const char *name, uint32_t id,
+					struct element *parent)
 {
 	struct list_head *list;
 	struct element *e;