diff --git a/src/overpass_api/core/datatypes.h b/src/overpass_api/core/datatypes.h
index 7076be728..304716725 100644
--- a/src/overpass_api/core/datatypes.h
+++ b/src/overpass_api/core/datatypes.h
@@ -447,7 +447,7 @@ struct User_Data
 
 struct OSM_Element_Metadata
 {
-  OSM_Element_Metadata() : user_id(0) {}
+  OSM_Element_Metadata() : user_id(0), changeset(0) {}
 
   uint32 version;
   uint64 timestamp;