diff --git a/modules/openapi-generator/src/main/resources/cpp-qt5-client/helpers-header.mustache b/modules/openapi-generator/src/main/resources/cpp-qt5-client/helpers-header.mustache
index 1607aeed2e8..96e3349fa47 100644
--- a/modules/openapi-generator/src/main/resources/cpp-qt5-client/helpers-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-qt5-client/helpers-header.mustache
@@ -11,6 +11,7 @@
 #include <QList>
 #include <QMap>
 #include <QSet>
+#include <QVariant>
 
 #include "{{prefix}}Enum.h"
 #include "{{prefix}}HttpFileElement.h"
diff --git a/samples/client/petstore/cpp-qt5/client/PFXHelpers.h b/samples/client/petstore/cpp-qt5/client/PFXHelpers.h
index ef468c1217e..bebd7b94690 100644
--- a/samples/client/petstore/cpp-qt5/client/PFXHelpers.h
+++ b/samples/client/petstore/cpp-qt5/client/PFXHelpers.h
@@ -21,6 +21,7 @@
 #include <QList>
 #include <QMap>
 #include <QSet>
+#include <QVariant>
 
 #include "PFXEnum.h"
 #include "PFXHttpFileElement.h"