diff --git a/lib/Foswiki/Plugins/OpenLayersPlugin.pm b/lib/Foswiki/Plugins/OpenLayersPlugin.pm
index deef58f..01ff289 100644
--- a/lib/Foswiki/Plugins/OpenLayersPlugin.pm
+++ b/lib/Foswiki/Plugins/OpenLayersPlugin.pm
@@ -118,7 +118,7 @@ sub _getJSON {
         my $whitelist =
           $Foswiki::cfg{Plugins}{OpenLayersPlugin}{URLs}{whitelist} || '';
         my @URLs =
-          map { quotemeta( $_ . '/' ) } split( /\/\s*,\s*/, $whitelist );
+          map { quotemeta( $_ . '/' ) } split( /\/?\s*,\s*/, $whitelist );
         my $URLregexp = join( '|', @URLs );
 
         if ( $whitelist && $url =~ /^($URLregexp)/ ) {