diff --git a/src/api/network.c b/src/api/network.c
index 67d80c57..429fc524 100644
--- a/src/api/network.c
+++ b/src/api/network.c
@@ -369,6 +369,7 @@ int api_client_suggestions(struct ftl_conn *api)
 	                    "FROM network_addresses na "
 	                      "WHERE na.network_id = n.id) "
 	                  "FROM network n "
+	                  "WHERE n.hwaddr NOT IN (SELECT CONCAT('ip-',lower(ip)) FROM g.client)"
 	                  "ORDER BY lastQuery DESC LIMIT ?";
 
 	if(sqlite3_prepare_v2(db, sql, -1, &stmt, NULL) != SQLITE_OK)
@@ -428,4 +429,3 @@ int api_client_suggestions(struct ftl_conn *api)
 	JSON_ADD_ITEM_TO_OBJECT(json, "clients", clients);
 	JSON_SEND_OBJECT(json);
 }
-