diff --git a/src/common/kernel/save.c b/src/common/kernel/save.c
index 1d9559e49..f7c7f8fb1 100644
--- a/src/common/kernel/save.c
+++ b/src/common/kernel/save.c
@@ -1707,7 +1707,6 @@ writeunit(FILE * F, const unit * u)
 	wi36(F, u->faction->no);
 	ws(F, u->name);
 	ws(F, u->display);
-	assert(old_race(u->race) == RC_SPELL || u->number == u->debug_number);
 	wi(F, u->number);
 	wi(F, u->age);
 	ws(F, u->race->_name[0]);
diff --git a/src/common/kernel/unit.h b/src/common/kernel/unit.h
index b4dd1ce1e..f52ce2f44 100644
--- a/src/common/kernel/unit.h
+++ b/src/common/kernel/unit.h
@@ -87,11 +87,6 @@ typedef struct unit {
 	struct strlist *botschaften;
 	unsigned int flags;
 	struct attrib * attribs;
-#ifndef NDEBUG
-	int debug_number;			/* Sollte immer == number sein. Wenn nicht, ist
-								 * * nicht mit createunit und set_number
-								 * * gearbeitet worden. */
-#endif
 	status_t status;
 	const struct race * race;
 	const struct race * irace;