diff --git a/loterre-resolvers/v1/combine.ini b/loterre-resolvers/v1/combine.ini
index d6cd7b1..f892578 100644
--- a/loterre-resolvers/v1/combine.ini
+++ b/loterre-resolvers/v1/combine.ini
@@ -19,8 +19,8 @@
 plugin = analytics
 
 # Flow configuration
-[URLStream]
-path = false
+#[URLStream]
+#path = false
 
 [XMLParse]
 separator = /rdf:RDF/skos:Concept
@@ -46,7 +46,7 @@
 value = fix(_.get(self, 'skos$prefLabel'), _.get(self, 'skos$altLabel'), _.get(self, 'skos$hiddenLabel')). \
         flatten().\
 		filter(o => _.has(o, '$t')).\
-		map(o =>_.lowerCase(_.trim((o.$t)))).\
+		map(o => String(o.$t).replace(/[`~!@#$%^&*()_|+\-=?;:'",.<>\{\}\[\]\\\/\s]/g, '').toLowerCase()).\
 		reduce((accumulator, value, key, collection) => (_.indexOf(collection, value) >= 0 ? accumulator.concat(value) : accumulator), [])