diff --git a/InterwikiPlugin/lib/Foswiki/Plugins/InterwikiPlugin.pm b/InterwikiPlugin/lib/Foswiki/Plugins/InterwikiPlugin.pm
index f8129c91b0..0eae1e7319 100644
--- a/InterwikiPlugin/lib/Foswiki/Plugins/InterwikiPlugin.pm
+++ b/InterwikiPlugin/lib/Foswiki/Plugins/InterwikiPlugin.pm
@@ -59,6 +59,7 @@ BEGIN {
         require locale;
         import locale();
     }
+    %interSiteTable = ();
 }
 
 # Read preferences and get all InterWiki Site->URL mappings