diff --git a/include/MDE/Foundation.h b/include/MDE/Foundation.h
index 5a50315..bef90ea 100644
--- a/include/MDE/Foundation.h
+++ b/include/MDE/Foundation.h
@@ -5,5 +5,6 @@
 
 #include <MDE/File.h>
 #include <MDE/String.h>
+#include <MDE/Users.h>
 
 #endif
diff --git a/include/MDE/Users.h b/include/MDE/Users.h
new file mode 100644
index 0000000..e8808e9
--- /dev/null
+++ b/include/MDE/Users.h
@@ -0,0 +1,16 @@
+#ifndef __MDE_USERS_H__
+#define __MDE_USERS_H__
+
+#include <MDE/MachDep.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void MDEListUsers(void(*call)(const char* name, void* user), void* user);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif