diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index b02a3651252..f2e51e40685 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -141,7 +141,7 @@ void OSDMonitor::update_from_paxos(bool *need_bootstrap)
 
     latest_full = 0;
     for (version_t v = lc; v >= fc; v--) {
-      string full_key = "full_" + stringify(latest_full);
+      string full_key = "full_" + stringify(v);
       if (mon->store->exists(get_service_name(), full_key)) {
         dout(10) << __func__ << " found latest full map v " << v << dendl;
         latest_full = v;