--- a/pkg/imports/wg.go	Fri May 17 09:51:28 2019 +0200
+++ b/pkg/imports/wg.go	Fri May 17 10:03:07 2019 +0200
@@ -410,24 +410,27 @@
 				string(*dr.Reflevel2code),
 				string(*dr.Reflevel3code),
 			})
-			rwls, err2 := tx.StmtContext(ctx,
+			rwls, err := tx.StmtContext(ctx,
 				deleteReferenceWaterLevelsStmt).QueryContext(ctx,
 				ic.code.String(),
 				&validity,
 				&currLevels,
 			)
-			if err2 != nil {
-				return nil, err2
+			if err != nil {
+				return nil, err
 			}
 			defer rwls.Close()
 			for rwls.Next() {
 				var delRef string
-				if err2 = rwls.Scan(&delRef); err2 != nil {
-					return nil, err2
+				if err := rwls.Scan(&delRef); err != nil {
+					return nil, err
 				}
 				feedback.Warn("Removed reference water level %s from %s",
 					delRef, ic.code)
 			}
+			if err := rwls.Err(); err != nil {
+				return nil, err
+			}
 		case err != nil:
 			feedback.Warn(handleError(err).Error())
 			if err2 := tx.Rollback(); err2 != nil {