diff --git a/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp b/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp
index f0770d7d188..7307d52cf9c 100644
--- a/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp
+++ b/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp
@@ -648,7 +648,7 @@ struct FindDialogContext
     HWND hwnd; // contains the HWND of the window found.
 };
 
-static BOOL CALLBACK findDialogEnumWindowsProc(HWND hwnd, LPARAM lParam)
+static BOOL QT_WIN_CALLBACK findDialogEnumWindowsProc(HWND hwnd, LPARAM lParam)
 {
     FindDialogContext *context = reinterpret_cast<FindDialogContext *>(lParam);
     DWORD winPid = 0;
@@ -1770,7 +1770,7 @@ void QWindowsXpNativeFileDialog::doExec(HWND owner)
 // Callback for QWindowsNativeXpFileDialog directory dialog.
 // MFC Directory Dialog. Contrib: Steve Williams (minor parts from Scott Powers)
 
-static int CALLBACK xpFileDialogGetExistingDirCallbackProc(HWND hwnd, UINT uMsg, LPARAM lParam, LPARAM lpData)
+static int QT_WIN_CALLBACK xpFileDialogGetExistingDirCallbackProc(HWND hwnd, UINT uMsg, LPARAM lParam, LPARAM lpData)
 {
     QWindowsXpNativeFileDialog *dialog = reinterpret_cast<QWindowsXpNativeFileDialog *>(lpData);
     return dialog->existingDirCallback(hwnd, uMsg, lParam);
diff --git a/src/plugins/platforms/windows/qwindowsfontdatabase.cpp b/src/plugins/platforms/windows/qwindowsfontdatabase.cpp
index fafdb377170..96659c505f8 100644
--- a/src/plugins/platforms/windows/qwindowsfontdatabase.cpp
+++ b/src/plugins/platforms/windows/qwindowsfontdatabase.cpp
@@ -933,8 +933,8 @@ static bool addFontToDatabase(const QString &familyName, uchar charSet,
     return true;
 }
 
-static int QT_ENSURE_STACK_ALIGNED_FOR_SSE CALLBACK
-storeFont(ENUMLOGFONTEX* f, NEWTEXTMETRICEX *textmetric, int type, LPARAM namesSetIn)
+static int QT_WIN_CALLBACK storeFont(ENUMLOGFONTEX* f, NEWTEXTMETRICEX *textmetric,
+                                     int type, LPARAM namesSetIn)
 {
     typedef QSet<QString> StringSet;
     const QString familyName = QString::fromWCharArray(f->elfLogFont.lfFaceName);
diff --git a/src/plugins/platforms/windows/qwindowsfontdatabase_ft.cpp b/src/plugins/platforms/windows/qwindowsfontdatabase_ft.cpp
index 57a9077e5dd..51961014d95 100644
--- a/src/plugins/platforms/windows/qwindowsfontdatabase_ft.cpp
+++ b/src/plugins/platforms/windows/qwindowsfontdatabase_ft.cpp
@@ -336,8 +336,8 @@ static QByteArray getFntTable(HFONT hfont, uint tag)
 }
 #endif
 
-static int CALLBACK storeFont(ENUMLOGFONTEX* f, NEWTEXTMETRICEX *textmetric,
-                              int type, LPARAM namesSetIn)
+static int QT_WIN_CALLBACK storeFont(ENUMLOGFONTEX* f, NEWTEXTMETRICEX *textmetric,
+                                     int type, LPARAM namesSetIn)
 {
     typedef QSet<QString> StringSet;
     const QString familyName = QString::fromWCharArray(f->elfLogFont.lfFaceName)