As soon as an edge port receives a BPDU, it will change the operational status to no-edge - so usually it's not much of an issue leaving it at the defaults but you may see periods of brief flooding if one of these links were to go online/offline.
Since you have noticed though, the best practice is to disable the edge-port status for your switch-to-switch links.
2524(config)#no spanning-tree 25-26 edge-port