diff --git a/src/gui/widgets/slider_base.cpp b/src/gui/widgets/slider_base.cpp
index 56d7e70a84f6..52e3442417bd 100644
--- a/src/gui/widgets/slider_base.cpp
+++ b/src/gui/widgets/slider_base.cpp
@@ -22,6 +22,8 @@
 #include "utils/functional.hpp"
 #include "utils/math.hpp"
 
+#include <cstdlib>
+
 #define LOG_SCOPE_HEADER get_control_type() + " [" + id() + "] " + __func__
 #define LOG_HEADER LOG_SCOPE_HEADER + ':'