diff --git a/src/object-store/src/shared_realm.hpp b/src/object-store/src/shared_realm.hpp
index 1536fa76..27c97a78 100644
--- a/src/object-store/src/shared_realm.hpp
+++ b/src/object-store/src/shared_realm.hpp
@@ -132,7 +132,7 @@ namespace realm {
         // Realm after closing it will produce undefined behavior.
         void close();
 
-        // returns the file format version upgraded from, or 0 if not upgraded
+        // returns the file format version upgraded from if an upgrade took place
         util::Optional<int> file_format_upgraded_from_version() const;
 
         ~Realm();