diff --git a/src/plugins/clangpchmanager/pchmanagerconnectionclient.cpp b/src/plugins/clangpchmanager/pchmanagerconnectionclient.cpp
index b5d4bd14e5c..324f0e2884b 100644
--- a/src/plugins/clangpchmanager/pchmanagerconnectionclient.cpp
+++ b/src/plugins/clangpchmanager/pchmanagerconnectionclient.cpp
@@ -51,13 +51,13 @@ ClangPchManager::PchManagerConnectionClient::PchManagerConnectionClient(
 {
     m_processCreator.setTemporaryDirectoryPattern("clangpchmanagerbackend-XXXXXX");
 
-    QDir pchsDirectory(Core::ICore::cacheResourcePath());
+    QDir pchsDirectory(Core::ICore::cacheResourcePath().toString());
     pchsDirectory.mkdir("pchs");
     pchsDirectory.cd("pchs");
     m_processCreator.setArguments({connectionName(),
-                                   Core::ICore::cacheResourcePath("symbol-experimental-v1.db"),
+                                   Core::ICore::cacheResourcePath("symbol-experimental-v1.db").toString(),
                                    pchsDirectory.absolutePath(),
-                                   Core::ICore::resourcePath()});
+                                   Core::ICore::resourcePath().toString()});
 
     stdErrPrefixer().setPrefix("PchManagerConnectionClient.stderr: ");
     stdOutPrefixer().setPrefix("PchManagerConnectionClient.stdout: ");
diff --git a/tests/unit/mockup/coreplugin/icore.h b/tests/unit/mockup/coreplugin/icore.h
index 8cf88f70376..239085d56d6 100644
--- a/tests/unit/mockup/coreplugin/icore.h
+++ b/tests/unit/mockup/coreplugin/icore.h
@@ -1,20 +1,23 @@
+#include "utils/fileutils.h"
+
 #include <QDir>
 
+
 namespace Core {
 namespace ICore {
-inline static QString userResourcePath()
+inline static Utils::FilePath userResourcePath()
 {
-     return QDir::tempPath();
+     return Utils::FilePath::fromString(QDir::tempPath());
 }
 
-inline static QString cacheResourcePath()
+inline static Utils::FilePath cacheResourcePath(const QString & /*rel*/ = {})
 {
-    return QDir::tempPath();
+    return Utils::FilePath::fromString(QDir::tempPath());
 }
 
-inline static QString resourcePath()
+inline static Utils::FilePath resourcePath()
 {
-    return QDir::tempPath();
+    return Utils::FilePath::fromString(QDir::tempPath());
 }
 
 } // namespace ICore