diff --git a/qmake/library/qmakeevaluator.cpp b/qmake/library/qmakeevaluator.cpp
index a68e8fe5df2..d7d9f1f3424 100644
--- a/qmake/library/qmakeevaluator.cpp
+++ b/qmake/library/qmakeevaluator.cpp
@@ -1171,6 +1171,8 @@ bool QMakeEvaluator::loadSpec()
 
     {
         QMakeEvaluator evaluator(m_option, m_parser, m_handler);
+        evaluator.m_sourceRoot = m_sourceRoot;
+        evaluator.m_buildRoot = m_buildRoot;
         if (!m_superfile.isEmpty()) {
             valuesRef(ProKey("_QMAKE_SUPER_CACHE_")) << ProString(m_superfile);
             if (evaluator.evaluateFile(