diff --git a/src/libs/utils/filepath.cpp b/src/libs/utils/filepath.cpp
index ad871413a22..9059a37ecc3 100644
--- a/src/libs/utils/filepath.cpp
+++ b/src/libs/utils/filepath.cpp
@@ -1914,7 +1914,7 @@ FilePath FilePath::canonicalPath() const
         return *this;
     }
 
-#ifdef Q_OS_WINDOWS
+#ifdef Q_OS_WIN
     DWORD flagsAndAttrs = FILE_ATTRIBUTE_NORMAL;
     if (isDir())
         flagsAndAttrs |= FILE_FLAG_BACKUP_SEMANTICS;