diff --git a/src/libisofs.h b/src/libisofs.h
index 38e1353..dd73618 100644
--- a/src/libisofs.h
+++ b/src/libisofs.h
@@ -43,6 +43,16 @@ enum IsoNodeType {
     LIBISO_BOOT
 };
 
+/**
+ * Flag used to hide a file in the RR/ISO or Joliet tree.
+ * 
+ * \see iso_node_set_hidden
+ */
+enum IsoHideNodeFlag {
+    LIBISO_HIDE_ON_RR = 1 << 0,
+    LIBISO_HIDE_ON_JOLIET = 1 << 1
+};
+
 /**
  * Create a new image, empty.
  * 
@@ -300,6 +310,25 @@ void iso_node_set_ctime(IsoNode *node, time_t time);
  */
 time_t iso_node_get_ctime(const IsoNode *node);
 
+/**
+ * Set if the node will be hidden in RR/ISO tree, Joliet tree or both.
+ * 
+ * If the file is setted as hidden in one tree, it won't be included there, so
+ * it won't be visible in a OS accessing CD using that tree. For example,
+ * GNU/Linux systems access to Rock Ridge / ISO9960 tree in order to see
+ * what is recorded on CD, while MS Windows make use of the Joliet tree. If a
+ * file is hidden only in Joliet, it won't be visible in Windows systems,
+ * while still visible in Linux.
+ * 
+ * If a file is hidden in both trees, it won't be written to image.
+ * 
+ * @param node 
+ *      The node that is to be hidden.
+ * @param hide_attrs 
+ *      IsoHideNodeFlag's to set the trees in which file will be hidden.
+ */
+void iso_node_set_hidden(IsoNode *node, int hide_attrs);
+
 /**
  * Add a new node to a dir. Note that this function don't add a new ref to
  * the node, so you don't need to free it, it will be automatically freed
diff --git a/src/node.c b/src/node.c
index 41edd51..d38294c 100644
--- a/src/node.c
+++ b/src/node.c
@@ -229,6 +229,11 @@ time_t iso_node_get_ctime(const IsoNode *node)
     return node->ctime;
 }
 
+void iso_node_set_hidden(IsoNode *node, int hide_attrs)
+{
+    node->hidden = hide_attrs;
+}
+
 /**
  * Add a new node to a dir. Note that this function don't add a new ref to
  * the node, so you don't need to free it, it will be automatically freed
diff --git a/src/node.h b/src/node.h
index 931cd51..34abad5 100644
--- a/src/node.h
+++ b/src/node.h
@@ -20,16 +20,6 @@
 #include <unistd.h>
 #include <stdint.h>
 
-/**
- * Flag used to hide a file in the RR/ISO or Joliet tree.
- * 
- * \see iso_tree_node_set_hidden
- */
-enum IsoHideNodeFlag {
-    LIBISO_HIDE_ON_RR = 1 << 0,
-    LIBISO_HIDE_ON_JOLIET = 1 << 1
-};
-
 /**
  * 
  */
diff --git a/src/tree.c b/src/tree.c
index 751e6f7..f4e2978 100644
--- a/src/tree.c
+++ b/src/tree.c
@@ -360,7 +360,7 @@ int iso_tree_add_node(IsoImage *image, IsoDir *parent, const char *path,
     result = iso_tree_add_node_builder(image, parent, file, image->builder, 
                                        node);
     /* free the file */
-    iso_file_source_unref(file);                
+    iso_file_source_unref(file);       
     return result;
 }