diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp
index 79d225bb00e..762323c4e14 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp
@@ -107,7 +107,7 @@ QList<BuildInfo *> QmakeProjectImporter::import(const FileName &importPath, bool
 
         BaseQtVersion *version
                 = Utils::findOrDefault(QtVersionManager::versions(),
-                                      [&canonicalQmakeBinary](BaseQtVersion *v) {
+                                      [&canonicalQmakeBinary](BaseQtVersion *v) -> bool {
                                           QFileInfo vfi = v->qmakeCommand().toFileInfo();
                                           FileName current = FileName::fromString(vfi.canonicalFilePath());
                                           return current == canonicalQmakeBinary;
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
index 79c12ffde05..f0f006eb6ca 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
@@ -31,8 +31,9 @@
 #ifndef QMAKEPROJECTIMPORTER_H
 #define QMAKEPROJECTIMPORTER_H
 
+#include "qmakestep.h"
+
 #include <projectexplorer/projectimporter.h>
-#include <qmakestep.h>
 
 namespace QtSupport { class BaseQtVersion; }
 
diff --git a/src/plugins/qmakeprojectmanager/qmakestep.h b/src/plugins/qmakeprojectmanager/qmakestep.h
index ea1a9f9f474..85891a7fff9 100644
--- a/src/plugins/qmakeprojectmanager/qmakestep.h
+++ b/src/plugins/qmakeprojectmanager/qmakestep.h
@@ -36,6 +36,8 @@
 
 #include <QStringList>
 
+#include <tuple>
+
 namespace Utils { class FileName; }
 
 namespace ProjectExplorer {