diff --git a/local/recipes/system/redbear-greeter/source/ui/greeter_backend.cpp b/local/recipes/system/redbear-greeter/source/ui/greeter_backend.cpp
index 996d453944..d6770fc8c8 100644
--- a/local/recipes/system/redbear-greeter/source/ui/greeter_backend.cpp
+++ b/local/recipes/system/redbear-greeter/source/ui/greeter_backend.cpp
@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include "greeter_backend.h"
 
 #include <QByteArray>
diff --git a/local/recipes/system/redbear-greeter/source/ui/main.cpp b/local/recipes/system/redbear-greeter/source/ui/main.cpp
index b99da0d7e2..3bd0799687 100644
--- a/local/recipes/system/redbear-greeter/source/ui/main.cpp
+++ b/local/recipes/system/redbear-greeter/source/ui/main.cpp
@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <QGuiApplication>
 #include <QQmlApplicationEngine>
 #include <QQmlContext>