diff --git a/scene/3d/voxel_light_baker.cpp b/scene/3d/voxel_light_baker.cpp
index 5e4cef586e..bd1f00b0d8 100644
--- a/scene/3d/voxel_light_baker.cpp
+++ b/scene/3d/voxel_light_baker.cpp
@@ -1,3 +1,5 @@
+#include <stdlib.h>
+
 #include "voxel_light_baker.h"
 #include "os/os.h"
 #define FINDMINMAX(x0, x1, x2, min, max) \