diff --git a/src/storage_tiering.cpp b/src/storage_tiering.cpp
index f49a4ea..1db5299 100644
--- a/src/storage_tiering.cpp
+++ b/src/storage_tiering.cpp
@@ -623,7 +623,7 @@ namespace irods {
                     {
                         // An irods::query_processor concurrently executes this function for each returned result. Each
                         // instance refers to the same object_is_processed instance. So, we need a lock here to protect
-                        // against concurrent accesses the object_is_processed map.
+                        // against concurrent accesses of the object_is_processed map.
                         const std::lock_guard object_is_processed_lock{object_is_processed_mutex};
 
                         if (std::end(object_is_processed) != object_is_processed.find(object_path)) {