diff --git a/src/plugins/cpptools/compileroptionsbuilder.cpp b/src/plugins/cpptools/compileroptionsbuilder.cpp
index d0c553c1eba..0f0df8c86c3 100644
--- a/src/plugins/cpptools/compileroptionsbuilder.cpp
+++ b/src/plugins/cpptools/compileroptionsbuilder.cpp
@@ -576,7 +576,7 @@ void CompilerOptionsBuilder::addWrappedQtHeadersIncludePath(QStringList &list) c
 QString CompilerOptionsBuilder::includeDirOptionForSystemPath(ProjectExplorer::HeaderPathType type) const
 {
     if (type == ProjectExplorer::HeaderPathType::Framework)
-        return "-F";
+        return QString("-F");
 
     if (m_useSystemHeader == UseSystemHeader::Yes)
         return includeSystemPathOption;
diff --git a/src/plugins/cpptools/cpptools.qbs b/src/plugins/cpptools/cpptools.qbs
index 6659ddf922b..286cd4c8c27 100644
--- a/src/plugins/cpptools/cpptools.qbs
+++ b/src/plugins/cpptools/cpptools.qbs
@@ -188,6 +188,8 @@ Project {
             "functionutils.h",
             "generatedcodemodelsupport.cpp",
             "generatedcodemodelsupport.h",
+            "headerpathfilter.cpp",
+            "headerpathfilter.h",
             "includeutils.cpp",
             "includeutils.h",
             "indexitem.cpp",