diff --git a/src/plugins/projectexplorer/headerpath.h b/src/plugins/projectexplorer/headerpath.h
index f46d1ad401e..6df25245424 100644
--- a/src/plugins/projectexplorer/headerpath.h
+++ b/src/plugins/projectexplorer/headerpath.h
@@ -6,6 +6,7 @@
 #include <utils/algorithm.h>
 #include <utils/fileutils.h>
 
+#include <QDir>
 #include <QString>
 #include <QVector>
 
@@ -22,7 +23,8 @@ class HeaderPath
 {
 public:
     HeaderPath() = default;
-    HeaderPath(const QString &path, HeaderPathType type) : path(path), type(type) { }
+    HeaderPath(const QString &path, HeaderPathType type)
+        : path(QDir::fromNativeSeparators(path)), type(type) { }
     HeaderPath(const char *path, HeaderPathType type) : HeaderPath(QLatin1String(path), type) {}
     HeaderPath(const Utils::FilePath &path, HeaderPathType type)
         : HeaderPath(path.path(), type)