--- a/artifacts/src/main/java/org/dive4elements/river/exports/DischargeCurveGenerator.java	Thu Jun 12 12:29:03 2014 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/DischargeCurveGenerator.java	Thu Jun 12 19:16:30 2014 +0200
@@ -374,7 +374,7 @@
      * (in imported data they are set to -1 symbolically).
      * Return false if data is null or empty
      */
-    private boolean hasNoDischarge(double[][] data) {
+    private static boolean hasNoDischarge(double[][] data) {
         if (data == null || data.length == 0) {
             return false;
         }