diff --git a/src/Directory.cxx b/src/Directory.cxx
index b67ad3de8..dec772c01 100644
--- a/src/Directory.cxx
+++ b/src/Directory.cxx
@@ -51,6 +51,15 @@ Directory::Allocate(const char *path)
 	return directory;
 }
 
+Directory::Directory()
+{
+	INIT_LIST_HEAD(&children);
+	INIT_LIST_HEAD(&songs);
+	INIT_LIST_HEAD(&playlists);
+
+	path[0] = 0;
+}
+
 Directory::Directory(const char *_path)
 {
 	INIT_LIST_HEAD(&children);
diff --git a/src/Directory.hxx b/src/Directory.hxx
index 3b2c6b1a3..ab23a6922 100644
--- a/src/Directory.hxx
+++ b/src/Directory.hxx
@@ -100,7 +100,7 @@ public:
 	/**
 	 * Default constructor, needed for #detached_root.
 	 */
-	Directory() = default;
+	Directory();
 	~Directory();
 
 	/**
diff --git a/test/DumpPlaylist.cxx b/test/DumpPlaylist.cxx
index 612f54827..427052b6c 100644
--- a/test/DumpPlaylist.cxx
+++ b/test/DumpPlaylist.cxx
@@ -38,6 +38,7 @@ extern "C" {
 #include <unistd.h>
 #include <stdlib.h>
 
+Directory::Directory() {}
 Directory::~Directory() {}
 
 static void
diff --git a/test/TestQueuePriority.cxx b/test/TestQueuePriority.cxx
index 01f39a006..6d994176f 100644
--- a/test/TestQueuePriority.cxx
+++ b/test/TestQueuePriority.cxx
@@ -7,6 +7,7 @@ extern "C" {
 
 Directory detached_root;
 
+Directory::Directory() {}
 Directory::~Directory() {}
 
 struct song *