diff --git a/src/set.h b/src/set.h
index 9312af8..415323a 100644
--- a/src/set.h
+++ b/src/set.h
@@ -61,7 +61,7 @@
  * @return LY_EINVAL in case of NULL @p set parameter.
  * @return LY_EMEM in case of memory allocation failure.
  */
-LY_ERR ly_set_new(struct ly_set **set_p);
+LIBYANG_API_DECL LY_ERR ly_set_new(struct ly_set **set_p);
 
 /**
  * @brief Duplicate the existing set.
@@ -75,7 +75,7 @@
  * @return LY_EMEM in case of memory allocation failure.
  * @return LY_EINVAL in case of invalid parameters.
  */
-LY_ERR ly_set_dup(const struct ly_set *set, void *(*duplicator)(void *obj), struct ly_set **newset_p);
+LIBYANG_API_DECL LY_ERR ly_set_dup(const struct ly_set *set, void *(*duplicator)(void *obj), struct ly_set **newset_p);
 
 /**
  * @brief Add an object into the set
@@ -90,7 +90,7 @@
  * @return LY_EINVAL in case of invalid input parameters.
  * @return LY_EMEM in case of memory allocation failure.
  */
-LY_ERR ly_set_add(struct ly_set *set, void *object, ly_bool list, uint32_t *index_p);
+LIBYANG_API_DECL LY_ERR ly_set_add(struct ly_set *set, void *object, ly_bool list, uint32_t *index_p);
 
 /**
  * @brief Add all objects from \p src to \p trg.
@@ -107,7 +107,7 @@
  * @return LY_EINVAL in case of invalid input parameters.
  * @return LY_EMEM in case of memory allocation failure.
  */
-LY_ERR ly_set_merge(struct ly_set *trg, const struct ly_set *src, ly_bool list, void *(*duplicator)(void *obj));
+LIBYANG_API_DECL LY_ERR ly_set_merge(struct ly_set *trg, const struct ly_set *src, ly_bool list, void *(*duplicator)(void *obj));
 
 /**
  * @brief Learn whether the set contains the specified object.
@@ -117,7 +117,7 @@
  * @param[out] index_p Optional pointer to return index of the searched @p object.
  * @return Boolean value whether the @p object was found in the @p set.
  */
-ly_bool ly_set_contains(const struct ly_set *set, void *object, uint32_t *index_p);
+LIBYANG_API_DECL ly_bool ly_set_contains(const struct ly_set *set, void *object, uint32_t *index_p);
 
 /**
  * @brief Remove all objects from the set, but keep the set container for further use.
@@ -125,7 +125,7 @@
  * @param[in] set Set to clean.
  * @param[in] destructor Optional function to free the objects in the set.
  */
-void ly_set_clean(struct ly_set *set, void (*destructor)(void *obj));
+LIBYANG_API_DECL void ly_set_clean(struct ly_set *set, void (*destructor)(void *obj));
 
 /**
  * @brief Remove an object from the set.
@@ -138,7 +138,7 @@
  * @param[in] destructor Optional function to free the objects being removed.
  * @return LY_ERR return value.
  */
-LY_ERR ly_set_rm(struct ly_set *set, void *object, void (*destructor)(void *obj));
+LIBYANG_API_DECL LY_ERR ly_set_rm(struct ly_set *set, void *object, void (*destructor)(void *obj));
 
 /**
  * @brief Remove an object on the specific set index.
@@ -151,7 +151,7 @@
  * @param[in] destructor Optional function to free the objects being removed.
  * @return LY_ERR return value.
  */
-LY_ERR ly_set_rm_index(struct ly_set *set, uint32_t index, void (*destructor)(void *obj));
+LIBYANG_API_DECL LY_ERR ly_set_rm_index(struct ly_set *set, uint32_t index, void (*destructor)(void *obj));
 
 /**
  * @brief Free the ::ly_set data. If the destructor is not provided, it frees only the set structure
@@ -160,7 +160,7 @@
  * @param[in] set The set to be freed.
  * @param[in] destructor Optional function to free the objects in the set.
  */
-void ly_set_free(struct ly_set *set, void (*destructor)(void *obj));
+LIBYANG_API_DECL void ly_set_free(struct ly_set *set, void (*destructor)(void *obj));
 
 /**
  * @brief Alternative to the ::ly_set_free() for static ::ly_set objects - in contrast to ::ly_set_free()
@@ -169,7 +169,7 @@
  * @param[in] set The set to be erased.
  * @param[in] destructor Optional function to free the objects in the set.
  */
-void ly_set_erase(struct ly_set *set, void (*destructor)(void *obj));
+LIBYANG_API_DECL void ly_set_erase(struct ly_set *set, void (*destructor)(void *obj));
 
 /** @} lyset */