--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/WQ.java	Thu Jun 12 12:29:03 2014 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/WQ.java	Thu Jun 12 19:16:30 2014 +0200
@@ -121,13 +121,13 @@
      * If a conversion takes place converted is set to true
      */
     public static WQ getFixedWQforExportAtGauge(WQ wq, BigDecimal datum) {
-        if (wq.getReferenceSystem() == wq.CENTIMETER_AT_GAUGE) {
+        if (wq.getReferenceSystem() == W.CENTIMETER_AT_GAUGE) {
             // Do nothing
             return wq;
         }
         // If we convert we work on a copy to avoid side effects.
         WQ ret = new WQ(wq.size(), wq.getName());
-        ret.setReferenceSystem(wq.CENTIMETER_AT_GAUGE);
+        ret.setReferenceSystem(W.CENTIMETER_AT_GAUGE);
 
         // When we convert and have a datum we have a calculated
         // result at a gauge so we must subtract the datum.