diff --git a/code/game/ai_dmq3.c b/code/game/ai_dmq3.c
index a18df550..8f22e2f5 100644
--- a/code/game/ai_dmq3.c
+++ b/code/game/ai_dmq3.c
@@ -2830,8 +2830,12 @@ float BotEntityVisible(int viewer, vec3_t eye, vec3_t viewangles, float fov, int
 	aas_entityinfo_t entinfo;
 	vec3_t dir, entangles, start, end, middle;
 
-	//calculate middle of bounding box
 	BotEntityInfo(ent, &entinfo);
+	if (!entinfo.valid) {
+		return 0;
+	}
+
+	//calculate middle of bounding box
 	VectorAdd(entinfo.mins, entinfo.maxs, middle);
 	VectorScale(middle, 0.5, middle);
 	VectorAdd(entinfo.origin, middle, middle);