diff --git a/src/tools/clangbackend/ipcsource/unsavedfile.cpp b/src/tools/clangbackend/ipcsource/unsavedfile.cpp
index b1c87e6025d..2cb3419545e 100644
--- a/src/tools/clangbackend/ipcsource/unsavedfile.cpp
+++ b/src/tools/clangbackend/ipcsource/unsavedfile.cpp
@@ -32,6 +32,11 @@
 
 namespace ClangBackEnd {
 
+UnsavedFile::UnsavedFile()
+    : cxUnsavedFile(CXUnsavedFile{nullptr, nullptr, 0UL})
+{
+}
+
 UnsavedFile::UnsavedFile(const Utf8String &filePath, const Utf8String &fileContent)
 {
     char *cxUnsavedFilePath = new char[filePath.byteSize() + 1];
@@ -45,13 +50,13 @@ UnsavedFile::UnsavedFile(const Utf8String &filePath, const Utf8String &fileConte
                                   ulong(fileContent.byteSize())};
 }
 
-UnsavedFile::UnsavedFile(UnsavedFile &&other) noexcept
+UnsavedFile::UnsavedFile(UnsavedFile &&other) Q_DECL_NOEXCEPT
     : cxUnsavedFile(other.cxUnsavedFile)
 {
     other.cxUnsavedFile = { nullptr, nullptr, 0UL };
 }
 
-UnsavedFile &UnsavedFile::operator=(UnsavedFile &&other) noexcept
+UnsavedFile &UnsavedFile::operator=(UnsavedFile &&other) Q_DECL_NOEXCEPT
 {
     using std::swap;
 
diff --git a/src/tools/clangbackend/ipcsource/unsavedfile.h b/src/tools/clangbackend/ipcsource/unsavedfile.h
index 17e09667dcd..51b66c1b393 100644
--- a/src/tools/clangbackend/ipcsource/unsavedfile.h
+++ b/src/tools/clangbackend/ipcsource/unsavedfile.h
@@ -25,6 +25,8 @@
 
 #pragma once
 
+#include <QtGlobal>
+
 #include <clang-c/Index.h>
 
 #include <iosfwd>
@@ -40,14 +42,15 @@ class UnsavedFile
 public:
     friend void PrintTo(const UnsavedFile &unsavedFile, std::ostream *os);
 
+    UnsavedFile();
     UnsavedFile(const Utf8String &filePath, const Utf8String &fileContent);
     ~UnsavedFile();
 
     UnsavedFile(const UnsavedFile &other) = delete;
     bool operator=(const UnsavedFile &other) = delete;
 
-    UnsavedFile(UnsavedFile &&other) noexcept;
-    UnsavedFile &operator=(UnsavedFile &&other) noexcept;
+    UnsavedFile(UnsavedFile &&other) Q_DECL_NOEXCEPT;
+    UnsavedFile &operator=(UnsavedFile &&other) Q_DECL_NOEXCEPT;
 
     const char *filePath() const;
 
@@ -57,7 +60,7 @@ public:
     CXUnsavedFile *data();
 
 public: // for tests
-    CXUnsavedFile cxUnsavedFile = { nullptr, nullptr, 0UL };
+    CXUnsavedFile cxUnsavedFile;
 };
 
 } // namespace ClangBackEnd