diff --git a/headers/private/kernel/util/OpenHashTable.h b/headers/private/kernel/util/OpenHashTable.h
index 1a28614a06..f233dc46ec 100644
--- a/headers/private/kernel/util/OpenHashTable.h
+++ b/headers/private/kernel/util/OpenHashTable.h
@@ -7,6 +7,7 @@
 
 
 #include <OS.h>
+#include <stdlib.h>
 
 #ifdef _KERNEL_MODE
 #	include <KernelExport.h>