diff --git a/mime/thumbnail-creator.cpp b/mime/thumbnail-creator.cpp
--- a/mime/thumbnail-creator.cpp
+++ b/mime/thumbnail-creator.cpp
@@ -20,8 +20,8 @@
 #include <KIO/ThumbCreator>
 #include <kdemacros.h>
 #include <QImage>
+#include <QTemporaryDir>
 #include <KTar>
-#include <KTempDir>
 
 namespace Palapeli
 {
@@ -47,8 +47,8 @@
 	KTar tar(path, "application/x-gzip");
 	if (!tar.open(QIODevice::ReadOnly))
 		return false;
-	KTempDir cache;
-	const QString cachePath = cache.name(); //note: includes trailing slash
+	QTemporaryDir cache;
+	const QString cachePath = cache.path() + QLatin1Char('/');
 	tar.directory()->copyTo(cachePath);
 	tar.close();
 	//read image
diff --git a/src/file-io/components-directorystorage.cpp b/src/file-io/components-directorystorage.cpp
--- a/src/file-io/components-directorystorage.cpp
+++ b/src/file-io/components-directorystorage.cpp
@@ -22,27 +22,27 @@
 #include <QtCore/QFutureSynchronizer>
 #include <KConfigGroup>
 #include <KDesktopFile>
-#include <KTempDir>
+#include <QTemporaryDir>
 
 Palapeli::DirectoryStorageComponent::DirectoryStorageComponent()
-	: m_dir(new KTempDir)
+  : m_dir(new QTemporaryDir)
 {
 }
 
 Palapeli::DirectoryStorageComponent::~DirectoryStorageComponent()
 {
-	m_dir->unlink();
+	m_dir->remove();
 	delete m_dir;
 }
 
 QString Palapeli::DirectoryStorageComponent::directory() const
 {
-	return m_dir->name();
+	return m_dir->path() + QLatin1Char('/');
 }
 
 Palapeli::PuzzleComponent* Palapeli::DirectoryStorageComponent::cast(Palapeli::PuzzleComponent::Type type) const
 {
-	QDir dir(m_dir->name());
+	QDir dir(m_dir->path());
 	//load metadata from directory
 	if (type == Metadata)
 	{
diff --git a/src/file-io/components.h b/src/file-io/components.h
--- a/src/file-io/components.h
+++ b/src/file-io/components.h
@@ -23,7 +23,7 @@
 #include "puzzlestructs.h"
 
 class KConfigGroup;
-class KTempDir;
+class QTemporaryDir;
 
 #define COMPONENT_SUBCLASS(mytype) \
 	public: \
@@ -86,7 +86,7 @@
 			QString directory() const;
 			Palapeli::PuzzleComponent* cast(Type type) const Q_DECL_OVERRIDE;
 		private:
-			KTempDir* m_dir;
+			QTemporaryDir* m_dir;
 	};
 
 	///This is a valid mainComponent.