diff --git a/players.c b/players.c
--- a/players.c
+++ b/players.c
@@ -520,6 +520,8 @@ Player *DoStartupNewPlayer(bool is_ai)
 	if (is_ai && (!_networking || _network_server) && _ai.enabled)
 		AI_StartNewAI(p->index);
 
+	memset(p->num_engines, 0, TOTAL_NUM_ENGINES);
+
 	return p;
 }