diff --git a/ArcGISRuntimeSDKQt_CppSamples/Routing/NavigateRoute/NavigateRoute.h b/ArcGISRuntimeSDKQt_CppSamples/Routing/NavigateRoute/NavigateRoute.h
index 21bfe9aea8..c2c3aa1ca4 100644
--- a/ArcGISRuntimeSDKQt_CppSamples/Routing/NavigateRoute/NavigateRoute.h
+++ b/ArcGISRuntimeSDKQt_CppSamples/Routing/NavigateRoute/NavigateRoute.h
@@ -36,7 +36,7 @@ class SimulatedLocationDataSource;
 
 #include <QObject>
 #include <QString>
-#include <QTextToSpeech>
+class QTextToSpeech;
 
 class NavigateRoute : public QObject
 {
diff --git a/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.cpp b/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.cpp
index 3cca43c1ef..9ca872f11f 100644
--- a/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.cpp
+++ b/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.cpp
@@ -1,4 +1,5 @@
 #include "NavigateRouteSpeaker.h"
+#include <QTextToSpeech>
 
 NavigateRouteSpeaker::NavigateRouteSpeaker(QObject* parent):
   QObject(parent)
diff --git a/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.h b/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.h
index 303a860d26..24c74cf445 100644
--- a/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.h
+++ b/ArcGISRuntimeSDKQt_QMLSamples/Routing/NavigateRoute/NavigateRouteSpeaker.h
@@ -2,10 +2,8 @@
 #define NAVIGATEROUTESPEAKER_H
 
 #include <QObject>
-#include <QTextToSpeech>
-#include <QQmlEngine>
-#include <QJSEngine>
 
+class QTextToSpeech;
 class NavigateRouteSpeaker : public QObject
 {
   Q_OBJECT