diff --git a/src/dutch/ResDut.gf b/src/dutch/ResDut.gf
index d73f5f30c..38617a733 100644
--- a/src/dutch/ResDut.gf
+++ b/src/dutch/ResDut.gf
@@ -47,9 +47,10 @@ resource ResDut = ParamX ** open Prelude, Predef in {
       _ + ("ie"|"ee") => mkNoun s (s + "ën") Utr ; -- zee→zeeën, knie→knieën. 
                                                    -- olie→oliën, industrie→industrieën with 2-arg constructor.
       _ + ("i"|"u")   => mkNoun s (endCons s + "en") Utr ;
+
+      b + #diphthong + ?         => mkNoun s (endCons s + "en") Utr ; -- boek→boeken
+      b + v@#dupVow + c@?        => mkNoun s (b + shortVoc v c + "en") Utr ;
       b + v@#vowel + c@#dupCons  => mkNoun s (b + v + c + c + "en") Utr ;
-      b + v@#dupVow + c@? => mkNoun s (b + shortVoc v c + "en") Utr ; 
-      b + #diphthong + ?  => mkNoun s (endCons s + "en") Utr ;
       _ + "e" => mkNoun s (s + "s") Utr ; -- vrede→vredes. Might not be a good generalisation though. /IL2018
       _       => mkNoun s (endCons s + "en") Utr
       } ;