diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index 874e04f9a0bd..ee2f072831aa 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -408,7 +408,7 @@ const char * __init xbc_node_find_next_key_value(struct xbc_node *root,
 
 /* XBC parse and tree build */
 
-static int __init xbc_init_node(struct xbc_node *node, char *data, uint32_t flag)
+static int __init xbc_init_node(struct xbc_node *node, char *data, uint16_t flag)
 {
 	unsigned long offset = data - xbc_data;
 
@@ -422,7 +422,7 @@ static int __init xbc_init_node(struct xbc_node *node, char *data, uint32_t flag
 	return 0;
 }
 
-static struct xbc_node * __init xbc_add_node(char *data, uint32_t flag)
+static struct xbc_node * __init xbc_add_node(char *data, uint16_t flag)
 {
 	struct xbc_node *node;
 
@@ -452,7 +452,7 @@ static inline __init struct xbc_node *xbc_last_child(struct xbc_node *node)
 	return node;
 }
 
-static struct xbc_node * __init __xbc_add_sibling(char *data, uint32_t flag, bool head)
+static struct xbc_node * __init __xbc_add_sibling(char *data, uint16_t flag, bool head)
 {
 	struct xbc_node *sib, *node = xbc_add_node(data, flag);
 
@@ -480,17 +480,17 @@ static struct xbc_node * __init __xbc_add_sibling(char *data, uint32_t flag, boo
 	return node;
 }
 
-static inline struct xbc_node * __init xbc_add_sibling(char *data, uint32_t flag)
+static inline struct xbc_node * __init xbc_add_sibling(char *data, uint16_t flag)
 {
 	return __xbc_add_sibling(data, flag, false);
 }
 
-static inline struct xbc_node * __init xbc_add_head_sibling(char *data, uint32_t flag)
+static inline struct xbc_node * __init xbc_add_head_sibling(char *data, uint16_t flag)
 {
 	return __xbc_add_sibling(data, flag, true);
 }
 
-static inline __init struct xbc_node *xbc_add_child(char *data, uint32_t flag)
+static inline __init struct xbc_node *xbc_add_child(char *data, uint16_t flag)
 {
 	struct xbc_node *node = xbc_add_sibling(data, flag);