diff -r a2b9a934044e -r e4663e88c530 ai/ai.c
--- a/ai/ai.c	Tue Nov 29 15:53:15 2005 +0000
+++ b/ai/ai.c	Tue Nov 29 16:06:06 2005 +0000
@@ -250,6 +250,8 @@
  */
 void AI_StartNewAI(PlayerID player)
 {
+	assert(player < MAX_PLAYERS);
+
 #ifdef GPMI
 	/* Keep this in a different IF, because the function can turn _ai.gpmi off!! */
 	if (_ai.gpmi && _ai.gpmi_mod == NULL)