diff --git a/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp b/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp
index 58de3bc167d..e463a63d9d6 100644
--- a/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp
@@ -67,6 +67,7 @@
 #include <QJsonObject>
 #include <QLoggingCategory>
 #include <QPushButton>
+#include <QRegularExpression>
 
 using namespace ProjectExplorer;
 using namespace Utils;