diff --git a/src/add-ons/kernel/file_systems/udf/UdfStructures.cpp b/src/add-ons/kernel/file_systems/udf/UdfStructures.cpp
index 5481c374b9..d4565297ff 100644
--- a/src/add-ons/kernel/file_systems/udf/UdfStructures.cpp
+++ b/src/add-ons/kernel/file_systems/udf/UdfStructures.cpp
@@ -106,6 +106,14 @@ const char *Udf::tag_id_to_string(tag_id id)
 // volume_structure_descriptor_header
 //----------------------------------------------------------------------
 
+volume_structure_descriptor_header::volume_structure_descriptor_header(uint8 type, const char *_id, uint8 version)
+	: type(type)
+	, version(version)
+{
+	memcpy(id, _id, 5);
+}
+
+
 /*! \brief Returns true if the given \a id matches the header's id.
 */
 bool
diff --git a/src/add-ons/kernel/file_systems/udf/UdfStructures.h b/src/add-ons/kernel/file_systems/udf/UdfStructures.h
index c70c154901..3226fb3a32 100644
--- a/src/add-ons/kernel/file_systems/udf/UdfStructures.h
+++ b/src/add-ons/kernel/file_systems/udf/UdfStructures.h
@@ -216,6 +216,9 @@ extern const entity_id kVirtualPartitionMapId;
 	See also: ECMA 167 2/9.1
 */	
 struct volume_structure_descriptor_header {
+public:
+	volume_structure_descriptor_header(uint8 type, const char *id, uint8 version);
+	
 	uint8 type;
 	char id[5];
 	uint8 version;