diff --git a/comphelper/source/misc/backupfilehelper.cxx b/comphelper/source/misc/backupfilehelper.cxx
index 3e534bd7aa47..9f11db4354e0 100644
--- a/comphelper/source/misc/backupfilehelper.cxx
+++ b/comphelper/source/misc/backupfilehelper.cxx
@@ -1990,7 +1990,7 @@ namespace comphelper
         // but as we are now in SafeMode, use XML infos for this since the
         // extensions are not loaded from XExtensionManager
         ExtensionInfo aCurrentExtensionInfo;
-        const ExtensionInfoEntryVector aToBeEnabled;
+        const ExtensionInfoEntryVector aToBeEnabled = { };
         ExtensionInfoEntryVector aToBeDisabled;
 
         aCurrentExtensionInfo.createUsingExtensionRegistryEntriesFromXML(maUserConfigWorkURL);