diff --git a/DDCond/src/plugins/ConditionsSnapshotRootLoader.cpp b/DDCond/src/plugins/ConditionsSnapshotRootLoader.cpp
index 7f82356a825d637e48a4626805392f5ab15ded1a..5b1c628530cde7e4e17c0ec52c6b807311dbfdd4 100644
--- a/DDCond/src/plugins/ConditionsSnapshotRootLoader.cpp
+++ b/DDCond/src/plugins/ConditionsSnapshotRootLoader.cpp
@@ -116,7 +116,7 @@ size_t ConditionsSnapshotRootLoader::load_single(key_type   /* key */,
   return conditions.size()-len;
 }
 
-size_t ConditionsSnapshotRootLoader::load_range(key_type key,
+size_t ConditionsSnapshotRootLoader::load_range(key_type   /* key */,
                                                 const IOV& /* req_validity */,
                                                 RangeConditions& conditions)
 {