diff --git a/src/parser_yin.c b/src/parser_yin.c
index aa27547..060d523 100644
--- a/src/parser_yin.c
+++ b/src/parser_yin.c
@@ -46,17 +46,7 @@
     [YIN_ARG_XMLNS] = "xmlns",
 };
 
-/**
- * @brief check if keyword was matched properly,
- * information about namespace is not always fully available when type of keyword is already needed
- * this function retroactively checks if kw isn't actually extension instance or unknown element without namespace
- *
- * @param[in] xml_ctx Xml context.
- * @param[in] prefix Keyword prefix.
- * @param[in] prefix_len Length of prefix.
- * @param[in,out] kw Type of keyword.
- */
-void
+static void
 check_kw_ns(struct lyxml_context *xml_ctx, const char *prefix, size_t prefix_len, enum yang_keyword *kw)
 {
     const struct lyxml_ns *ns = NULL;
@@ -270,16 +260,6 @@
     return LY_SUCCESS;
 }
 
-/**
- * @brief function to parse meta tags eg. elements with text element as child
- *
- * @param[in] xml_ctx Xml context.
- * @param[in] args Sized array of arguments of current elements.
- * @param[in,out] data Data to read from.
- * @param[out] value Where the content of meta tag should be stored.
- *
- * @return LY_ERR values.
- */
 LY_ERR
 yin_parse_meta_element(struct lyxml_context *xml_ctx, struct yin_arg_record **args, const char **data, const char **value)
 {
@@ -336,17 +316,6 @@
     return LY_SUCCESS;
 }
 
-/**
- * @brief Parse revision date.
- *
- * @param[in] xml_ctx Xml context.
- * @param[in] args Sized array of arguments of current element.
- * @param[in,out] data Data to read from.
- * @param[in,out] rev Array to store the parsed value in.
- * @param[in,out] exts Extension instances to add to.
- *
- * @return LY_ERR values.
- */
 static LY_ERR
 yin_parse_revision_date(struct lyxml_context *xml_ctx, struct yin_arg_record **args, const char **data, char *rev, struct lysp_ext_instance **exts)
 {
@@ -533,16 +502,7 @@
     return ret;
 }
 
-/**
- * @brief Parse module substatements.
- *
- * @param[in] xml_ctx Xml context.
- * @param[in,out] data Data to read from.
- * @param[out] mod Parsed module structure.
- *
- * @return LY_ERR values.
- */
-LY_ERR
+static LY_ERR
 yin_parse_mod(struct lyxml_context *xml_ctx, struct yin_arg_record **mod_args, const char **data, struct lysp_module **mod)
 {
     LY_ERR ret = LY_SUCCESS;
diff --git a/src/parser_yin.h b/src/parser_yin.h
index d51a8ed..524fbb5 100644
--- a/src/parser_yin.h
+++ b/src/parser_yin.h
@@ -21,6 +21,18 @@
 #include "log.h"
 #include "xml.h"
 
+/**
+ * @brief check if keyword was matched properly,
+ * information about namespace is not always fully available when type of keyword is already needed
+ * this function retroactively checks if kw isn't actually extension instance or unknown element without namespace
+ *
+ * @param[in] xml_ctx Xml context.
+ * @param[in] prefix Keyword prefix.
+ * @param[in] prefix_len Length of prefix.
+ * @param[in,out] kw Type of keyword.
+ */
+static void check_kw_ns(struct lyxml_context *xml_ctx, const char *prefix, size_t prefix_len, enum yang_keyword *kw);
+
 /* list of yin attribute strings */
 extern const char *const yin_attr_list[];
 #define yin_attr2str(STMT) yin_attr_list[STMT]
@@ -66,6 +78,19 @@
 enum YIN_ARGUMENT yin_match_argument_name(const char *name, size_t len);
 
 /**
+ * @brief Parse module substatements.
+ *
+ * @param[in] xml_ctx Xml context.
+ * @param[in,out] data Data to read from.
+ * @param[out] mod Parsed module structure.
+ *
+ * @return LY_ERR values.
+ */
+static LY_ERR
+yin_parse_mod(struct lyxml_context *xml_ctx, struct yin_arg_record **mod_args, const char **data,
+              struct lysp_module **mod);
+
+/**
  * @brief Parse content of whole element as text.
  *
  * @param[in] xml_ctx Xml context.
@@ -107,6 +132,33 @@
                                     const char *prefix, size_t prefix_len);
 
 /**
+ * @brief function to parse meta tags eg. elements with text element as child
+ *
+ * @param[in] xml_ctx Xml context.
+ * @param[in] args Sized array of arguments of current elements.
+ * @param[in,out] data Data to read from.
+ * @param[out] value Where the content of meta tag should be stored.
+ *
+ * @return LY_ERR values.
+ */
+static LY_ERR yin_parse_meta_element(struct lyxml_context *xml_ctx, struct yin_arg_record **args, const char **data,
+                                     const char **value);
+
+/**
+ * @brief Parse revision date.
+ *
+ * @param[in] xml_ctx Xml context.
+ * @param[in] args Sized array of arguments of current element.
+ * @param[in,out] data Data to read from.
+ * @param[in,out] rev Array to store the parsed value in.
+ * @param[in,out] exts Extension instances to add to.
+ *
+ * @return LY_ERR values.
+ */
+static LY_ERR yin_parse_revision_date(struct lyxml_context *xml_ctx, struct yin_arg_record **args, const char **data,
+                                      char *rev, struct lysp_ext_instance **exts);
+
+/**
  * @brief Parse status statement.
  *
  * @param[in] xml_ctx Xml context.