diff --git a/src/tests/add-ons/kernel/kernelland_emu/vm.cpp b/src/tests/add-ons/kernel/kernelland_emu/vm.cpp
index 10fc4a17e8..16e3f83e1f 100644
--- a/src/tests/add-ons/kernel/kernelland_emu/vm.cpp
+++ b/src/tests/add-ons/kernel/kernelland_emu/vm.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010, Haiku Inc. All Rights Reserved.
+ * Copyright 2002-2023, Haiku Inc. All Rights Reserved.
  * Distributed under the terms of the MIT license.
  *
  * Authors:
@@ -29,6 +29,14 @@ user_strlcpy(char *to, const char *from, size_t size)
 }
 
 
+extern "C" status_t
+user_memset(void* target, char data, size_t length)
+{
+	memset(target, data, length);
+	return B_OK;
+}
+
+
 page_num_t
 vm_page_num_pages(void)
 {