diff --git a/src/plugins/coreplugin/coreplugin.cpp b/src/plugins/coreplugin/coreplugin.cpp
index b2f3ac9d8c8..565b0eac328 100644
--- a/src/plugins/coreplugin/coreplugin.cpp
+++ b/src/plugins/coreplugin/coreplugin.cpp
@@ -65,6 +65,8 @@
 #include <QMenu>
 #include <QUuid>
 
+#include <cstdlib>
+
 using namespace Core;
 using namespace Core::Internal;
 using namespace Utils;