diff --git a/reactos/include/internal/types.h b/reactos/include/internal/types.h
index 1afed206ced..e8bc6727800 100644
--- a/reactos/include/internal/types.h
+++ b/reactos/include/internal/types.h
@@ -2,6 +2,4 @@
 #ifndef _LINUX_TYPES_H
 #define _LINUX_TYPES_H
 
-typedef unsigned int size_t;
-
 #endif
diff --git a/reactos/ntoskrnl/ex/resource.c b/reactos/ntoskrnl/ex/resource.c
index 04569aaa144..c383ea54fde 100644
--- a/reactos/ntoskrnl/ex/resource.c
+++ b/reactos/ntoskrnl/ex/resource.c
@@ -37,6 +37,7 @@
 
 #include <ddk/ntddk.h>
 #include <internal/ke.h>
+#include <stddef.h>
 #include <internal/string.h>
 
 #define NDEBUG