diff --git a/src/osd_primary.cpp b/src/osd_primary.cpp
index 53f9050a..81a6b08f 100644
--- a/src/osd_primary.cpp
+++ b/src/osd_primary.cpp
@@ -129,16 +129,19 @@ bool osd_t::prepare_primary_rw(osd_op_t *cur_op)
         data_buf = (uint8_t*)data_buf + chain_size * (pool_cfg.scheme == POOL_SCHEME_REPLICATED ? 0 : pg_it->second.pg_size);
         // Copy chain
         int chain_num = 0;
-        op_data->read_chain[chain_num++] = cur_op->req.rw.inode;
+        op_data->read_chain[chain_num] = cur_op->req.rw.inode;
+        op_data->chain_states[chain_num] = NULL;
+        chain_num++;
         auto inode_it = st_cli.inode_config.find(cur_op->req.rw.inode);
         while (inode_it != st_cli.inode_config.end() && inode_it->second.parent_id &&
             INODE_POOL(inode_it->second.parent_id) == pg_it->second.pool_id &&
             // Check for loops
             inode_it->second.parent_id != cur_op->req.rw.inode)
         {
-            op_data->read_chain[chain_num++] = inode_it->second.parent_id;
-            op_data->chain_states[chain_num++] = NULL;
+            op_data->read_chain[chain_num] = inode_it->second.parent_id;
+            op_data->chain_states[chain_num] = NULL;
             inode_it = st_cli.inode_config.find(inode_it->second.parent_id);
+            chain_num++;
         }
     }
     pg_it->second.inflight++;