diff --git a/src/os/ObjectStore.cc b/src/os/ObjectStore.cc
index 1a1bbcb0b67..327c64167d5 100644
--- a/src/os/ObjectStore.cc
+++ b/src/os/ObjectStore.cc
@@ -504,7 +504,7 @@ int ObjectStore::collection_list(coll_t c, vector<hobject_t>& o)
   int ret = collection_list(c, go);
   if (ret == 0) {
     o.reserve(go.size());
-    for (vector<ghobject_t>::iterator i = go.begin(); i != go.end() ; i++)
+    for (vector<ghobject_t>::iterator i = go.begin(); i != go.end() ; ++i)
       o.push_back(i->hobj);
   }
   return ret;
@@ -520,7 +520,7 @@ int ObjectStore::collection_list_partial(coll_t c, hobject_t start,
   if (ret == 0) {
     *next = gnext.hobj;
     ls->reserve(go.size());
-    for (vector<ghobject_t>::iterator i = go.begin(); i != go.end() ; i++)
+    for (vector<ghobject_t>::iterator i = go.begin(); i != go.end() ; ++i)
       ls->push_back(i->hobj);
   }
   return ret;
@@ -534,7 +534,7 @@ int ObjectStore::collection_list_range(coll_t c, hobject_t start, hobject_t end,
   int ret = collection_list_range(c, gstart, gend, seq, &go);
   if (ret == 0) {
     ls->reserve(go.size());
-    for (vector<ghobject_t>::iterator i = go.begin(); i != go.end() ; i++)
+    for (vector<ghobject_t>::iterator i = go.begin(); i != go.end() ; ++i)
       ls->push_back(i->hobj);
   }
   return ret;