diff --git a/examples/phrasebook/Makefile2 b/examples/phrasebook/Makefile2
index 721a0279e..e6d811582 100644
--- a/examples/phrasebook/Makefile2
+++ b/examples/phrasebook/Makefile2
@@ -52,7 +52,7 @@ PhrasebookPol.pgf::
 	gf -make -s -optimize-pgf -name=PhrasebookPol PhrasebookPol.gf
 
 PhrasebookRon.pgf::
-	gf -make -s -optimize-pgf -name=PhrasebookRon PhrasebookRon.gf
+	gf -make -s -optimize-pgf -name=PhrasebookRon PhrasebookRon.gf +RTS -K32M
 
 PhrasebookRus.pgf::
 	gf -make -s -optimize-pgf -name=PhrasebookRus PhrasebookRus.gf