diff --git a/src/system/kernel/debug/debug.c b/src/system/kernel/debug/debug.c
index c1011eed59..464f135b38 100644
--- a/src/system/kernel/debug/debug.c
+++ b/src/system/kernel/debug/debug.c
@@ -783,6 +783,7 @@ remove_debugger_command(char * name, int (*func)(int, char **))
 uint32
 parse_expression(const char *expression)
 {
+	// TODO: Implement expression parser (cf. BeBook).
 	return strtoul(expression, NULL, 0);
 }